B1 Expression Neutral 3 min read

هذا ليس في مصلحتك

hadha laysa fi maslahatik

This is not in your interest

Literally: This (is) not in interest-your.

In 15 Seconds

  • A firm warning that an action will have negative consequences.
  • Used to give serious advice to friends, family, or colleagues.
  • Centered on the word 'maslaha,' meaning benefit or interest.

Meaning

It's like telling someone, 'Hey, I wouldn't do that if I were you because it's going to backfire.' It is a way to warn a friend or colleague that their current plan is a bad idea for their future.

Key Examples

3 of 7
1

A friend wants to quit their job without having a new one.

بلاش تستقيل دلوقتي، ده مش في مصلحتك.

Don't resign now, this is not in your interest.

2

A colleague is being rude to the manager.

الطريقة دي في الكلام مش في مصلحتك خالص.

This way of speaking is not in your interest at all.

3

Texting a sibling who is skipping their final exam.

لو مروحتش الامتحان، ده مش في مصلحتك يا حبيبي.

If you don't go to the exam, this is not in your interest, my dear.

🌍

Cultural Background

In the Levant, people often use 'مو لمصلحتك' (mū la-maṣlaḥtak). The 'la' replaces 'fī'. It is used very frequently in family discussions about marriage and education. Egyptians use 'مش في مصلحتك' (mish fī maṣlaḥtak). It's often said with a specific hand gesture—shaking the index finger—to emphasize the warning. In the Gulf, 'صالح' (ṣāliḥ) is often used instead of 'مصلحة'. You might hear 'هذا مو بصالحك'. It sounds slightly more traditional. In the Maghreb, the word 'mousliha' is used but often replaced by 'fayda' (benefit). 'هذا ماشي في مصلحتك' is the standard Darija version.

🎯

Use 'Sadaqni'

Precede the phrase with 'Sadaqni' (Believe me) to make it sound more sincere and less like a threat.

⚠️

Gender Agreement

Always check if you are talking to a male (-ka) or female (-ki). It's a very common mistake for learners.

In 15 Seconds

  • A firm warning that an action will have negative consequences.
  • Used to give serious advice to friends, family, or colleagues.
  • Centered on the word 'maslaha,' meaning benefit or interest.

What It Means

Imagine you see a friend about to walk into a trap. You want to stop them without sounding like a drill sergeant. This phrase is your best tool. It literally means "this is not in your interest." It sounds serious but often comes from a place of care. You are telling them that their current choice will hurt them later. It is a mix of a warning and friendly advice.

How To Use It

You can drop this phrase into a conversation quite easily. It usually follows a specific action or a statement of intent. If your friend says they want to quit their job tomorrow, you say ده مش في مصلحتك. It works as a standalone sentence. You do not need a lot of fluff around it. Just make sure your tone matches your intent. A soft tone sounds like advice. A sharp tone sounds like a warning.

When To Use It

Use it in professional settings when a deal looks bad. Use it with friends who are making questionable dating choices. It is great for parents talking to teenagers about staying out late. It also works in negotiations to show the other side they are losing out. If you are texting, it adds a layer of "real talk" to the chat. It shows you are looking out for the other person.

When NOT To Use It

Avoid using this for very small, unimportant things. Do not say it if someone picks the "wrong" ice cream flavor. That would sound way too dramatic and weird. Also, be careful using it with your boss. It might sound like you are threatening them if you are not careful. It implies you know better than they do. Use it only when the stakes are actually high.

Cultural Background

The word مصلحة (maslaha) is a cornerstone of Middle Eastern social life. It refers to benefit, interest, or even a "favor." In many cultures, doing things for the maslaha of the group is vital. When you use this phrase, you are tapping into that deep value. You are saying that the social or personal balance is at risk. It is not just about money; it is about well-being and reputation.

Common Variations

If you want to be positive, say ده في مصلحتك. This means "this is for your own good." To change the gender for a woman, say ده مش في مصلحتك (mas-lah-tik). For a group, use مصلحتكم (mas-lah-takum). You might also hear مش من مصلحتك, which means the same thing. It just adds a tiny bit more emphasis on the source of the interest.

Usage Notes

This phrase is most common in Egyptian Arabic but is understood everywhere. It sits in the 'neutral' register, making it safe for both friends and business associates as long as the tone is respectful.

🎯

Use 'Sadaqni'

Precede the phrase with 'Sadaqni' (Believe me) to make it sound more sincere and less like a threat.

⚠️

Gender Agreement

Always check if you are talking to a male (-ka) or female (-ki). It's a very common mistake for learners.

💬

The 'Nasiha' Rule

Only say this in private. Saying it in front of others can be seen as an insult to the person's intelligence.

Examples

7
#1 A friend wants to quit their job without having a new one.

بلاش تستقيل دلوقتي، ده مش في مصلحتك.

Don't resign now, this is not in your interest.

Giving career advice to a close friend.

#2 A colleague is being rude to the manager.

الطريقة دي في الكلام مش في مصلحتك خالص.

This way of speaking is not in your interest at all.

A professional warning about workplace behavior.

#3 Texting a sibling who is skipping their final exam.

لو مروحتش الامتحان، ده مش في مصلحتك يا حبيبي.

If you don't go to the exam, this is not in your interest, my dear.

Serious family advice via text.

#4 Humorous warning about eating too much dessert.

تالت حتة بسبوسة؟ ده مش في مصلحتك ولا مصلحة الدايت!

A third piece of Basbousa? This is not in your interest or the diet's!

Using the phrase jokingly about overeating.

#5 During a business negotiation.

تأخير التوقيع مش في مصلحتك.

Delaying the signature is not in your interest.

Creating urgency in a formal business context.

#6 Warning a friend about a bad investment.

المشروع ده ريسك كبير، وده مش في مصلحتك.

This project is a big risk, and that is not in your interest.

Financial advice between peers.

#7 A lawyer advising a client.

الكلام ده في المحكمة مش في مصلحتك.

Saying this in court is not in your interest.

Legal advice where the stakes are high.

Test Yourself

Fill in the blank with the correct form of 'Maslaha' and the pronoun for 'you' (masculine).

يا أحمد، السهر طويلاً ليس في _______.

✓ Correct! ✗ Not quite. Correct answer: مصلحتك

Since the sentence addresses 'Ahmed', we use the masculine singular suffix '-ka'.

Which sentence is the most appropriate for a formal business meeting?

To tell a partner that a deal is bad for them:

✓ Correct! ✗ Not quite. Correct answer: هذا ليس في مصلحتكم.

Option B uses Modern Standard Arabic and the plural 'kum' for formal address.

Complete the dialogue with the correct phrase.

سارة: سأترك وظيفتي غداً بدون سبب. ليلى: لا تفعلي ذلك، _______.

✓ Correct! ✗ Not quite. Correct answer: هذا ليس في مصلحتك

Laila is warning Sarah against a bad decision, so the negative form is required.

🎉 Score: /3

Visual Learning Aids

Practice Bank

3 exercises
Fill in the blank with the correct form of 'Maslaha' and the pronoun for 'you' (masculine). Fill Blank A2

يا أحمد، السهر طويلاً ليس في _______.

✓ Correct! ✗ Not quite. Correct answer: مصلحتك

Since the sentence addresses 'Ahmed', we use the masculine singular suffix '-ka'.

Which sentence is the most appropriate for a formal business meeting? Choose B1

To tell a partner that a deal is bad for them:

✓ Correct! ✗ Not quite. Correct answer: هذا ليس في مصلحتكم.

Option B uses Modern Standard Arabic and the plural 'kum' for formal address.

Complete the dialogue with the correct phrase. dialogue_completion B1

سارة: سأترك وظيفتي غداً بدون سبب. ليلى: لا تفعلي ذلك، _______.

✓ Correct! ✗ Not quite. Correct answer: هذا ليس في مصلحتك

Laila is warning Sarah against a bad decision, so the negative form is required.

🎉 Score: /3

Frequently Asked Questions

4 questions

No, it's generally helpful. However, tone matters. If said with a sneer, it can sound like a threat.

Yes! You can say 'هذا ليس في مصلحتي' (This is not in my interest) to decline an offer.

For a group, say 'هذا ليس في مصلحتكم' (maslahatikum).

Yes, 'هذا ليس في مصلحة الشركة'.

Related Phrases

🔗

من أجلك

similar

For your sake

🔗

على حسابك

contrast

At your expense

🔄

في صالحك

synonym

In your favor

🔗

لا ينفعك

similar

It does not benefit you

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