Hadith 17:310
Ali ibn Mushir narrated to us, from Yazid, from Mujahid, who said: The Messenger of Allah (may Allah bless him and grant him peace) said: "There are three things, whoever possesses them is a hypocrite: the one who, when he speaks, lies; and when he is entrusted, he betrays; and when he promises, he breaks it."
حدثنا علي بن مسهر عن يزيد عن مجاهد قال قال رسول الله صلى الله عليه وسلم ثلاث من كن فيه فهو منافق الذي إذا حدث كذب وإذا اؤتمن خان وإذا وعد أخلف