The Prophet ﷺ said, "Whoever has (the following) four characters will be a hypocrite, and whoever has one of the following four characteristics will have one characteristic of hypocrisy until he gives it up. These are: (1 ) Whenever he talks, he tells a lie; (2) whenever he makes a promise, he breaks it; (3) whenever he makes a covenant he proves treacherous; (4) and whenever he quarrels, he behaves impudently in an evil insulting manner." (See Hadith No. 33 Vol. 1) (Using translation from Bukhārī 2459)
عَنِ النَّبِيِّ ﷺ قَالَ «أَرْبَعَةٌ مَنْ كُنَّ فِيهِ كَانَ مُنَافِقًا أَوْ كَانَتْ فِيهِ خَصْلَةٌ مِنَ الْأَرْبَعِ كَانَتْ فِيهِ خَصْلَةٌ مِنْ النِّفَاقِ حَتَّى يَدَعَهَا إِذَا حَدَّثَ كَذَبَ وَإِذَا وَعَدَ أَخْلَفَ وَإِذَا عَاهَدَ غَدَرَ وَإِذَا خَاصَمَ فَجَرَ»