Mishkat al-Masabih

Abu Huraira reported God's messenger as saying, “There are three signs of a hypocrite.” Muslim added, “Even if he fasts, prays, and asserts that he is a Muslim.” Thereafter both Bukhari and Muslim said, “When he speaks he lies, when he makes a promise he breaks it, and when he is trusted he betrays his trust.”

‘Abdallah b. ‘Amr reported God's messenger as saying, “Four characteristics constitute anyone who possesses them a sheer hypocrite, and anyone who possesses one of them possesses a characteristic of hypocrisy till he abandons it: when he is trusted he betrays his trust, when he talks he lies, when he makes a covenant he acts treacherously, and when he quarrels he deviates from the truth.” (Bukhari and Muslim.)

Ibn ‘Umar reported God's messenger as saying, “The hypocrite is like a ewe which goes to and fro between two flocks, turning at one time to the one and at another time to the other.” Muslim transmitted it.