Sahih Muslim Book 1, Hadith Number 111.

Chapter : Concerning the peculiarities of a hypocrite.

It is narrated on the authority of Abdullah b. ‘Amr that the Prophet observed: Four characteristics made anyone who possessed them, a sheer hypocrite; anyone who possessed one of them possessed a characteristic of hypocrisy till be abandons it: when he talked he lied, when he made a covenant he acted treacherously, and when he quarrelled he deviated from the truth.