Hadith
حَدَّثَنَا عَلِيُّ بْنُ حُجْرٍ قَالَ حَدَّثَنَا إِسْمَعِيلُ قَالَ حَدَّثَنَا أَبُو سُهَيْلٍ نَافِعُ بْنُ مَالِكِ بْنِ أَبِي عَامِرٍ عَنْ أَبِيهِ عَنْ أَبِي هُرَيْرَةَ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ آيَةُ النِّفَاقِ ثَلَاثٌ إِذَا حَدَّثَ كَذَبَ وَإِذَا وَعَدَ أَخْلَفَ وَإِذَا اؤْتُمِنَ خَانَ
It was narrated from Abu Hurairah that :The Messenger of Allah [SAW] said: "The signs of the hypocrite are three: When he speaks, he lies; when he makes a promise he breaks it; and when he is entrusted with something, he betrays (that trust)
Sahih · Abu Ghuddah
Sunan an-Nasa'i 5021 ·Book 47, Hadith 37·Also available on sunnah.com·