Al-Bukhari & Muslim, Hadith in English

Hazrat Abdullah bin Amr bin Al-‘as (May Allah be pleased with him) reported: The Messenger of Allah [S.A.W.W]((P.B.U.H) said, "Four are the qualities which, when found in a person, make him a sheer hypocrite, and one who possesses one of them, possesses one characteristic of hypocrisy until he abandons it. These are: When he is entrusted with something, he betrays trust; when he speaks, he lies; when he promises, he acts treacherously; and when he argues, he behaves in a very imprudent, insulting manner.''
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[Al-Bukhari and Muslim].