Narrated Yusuf ibn Malik al-Makki: I used to write (the account of) the expenditure incurred on orphans who were under the guardianship of so-and-so. They cheated him by one thousand dirhams and he paid these (this amount) to them. I then got double the property which they deserved. I said (to the man: Take one thousand (dirhams) which they have taken from you (by cheating). He said: No, my father has told me that he heard the Messenger of Allah ﷺ say: Pay the deposit to him who deposited it with you, and do not betray him who betrays you.
Hadith Referenceسنن ابي داود / كتاب الإجارة / 3534
Hadith Takhrij« تفرد بہ أبوداود، (تحفة الأشراف: 15708)، وقد أخرجہ: مسند احمد (3/414) (صحیح) » (اس کا راوی فلاں مبہم تابعی ہے ، لیکن اگلی حدیث اور دوسرے شواہد کے بناء پر یہ صحیح ہے، ملاحظہ ہو: سلسلة الاحادیث الصحیحہ، للالبانی 423)