'Abdullah bin 'Amr bin Al-'as (May Allah be pleased with him) reported:
The Messenger of Allah ﷺ 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 ﷺ 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)).