Riyad as-Salihin, Book 2, Hadith 690 (In-Book) ⓘ

'Abdullah bin 'Amr bin Al-'as (May Allah be pleased with him) reported: The Messenger of Allah 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."[Al-Bukhari and Muslim].

وعن عبد الله بن عمرو بن العاص رضي الله عنهما، أن رسول الله صلى الله عليه وسلم قال‏:‏ ‏ "‏أربع من كن فيه كان منافقا خالصاً‏.‏ ومن كانت فيه خصلة منهن كانت فيه خصلة من النفاق حتى يدعها ‏:‏ إذا اؤتمن خان ، وإذا حدث كذب، وإذا عاهد غدر، وإذا خاصم فجر‏" ‏‏(‏‏(‏متفق عليه‏)‏‏)‏‏.‏