Mishkat al-Masabih #49
Faith
The Arabic includes the chain of narration (sanad) and the collector's commentary; the English translation shows the Prophet's words only.
وَعَنْ أَبِي هُرَيْرَةَ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: ( «آيَةُ الْمُنَافِقِ ثَلَاثٌ» . زَادَ مُسْلِمٌ: «وَإِنْ صَامَ وَصَلَّى وَزَعَمَ أَنَّهُ مُسْلِمٌ» . ثُمَّ اتَّفَقَا: «إِذَا حَدَّثَ كَذَبَ وَإِذَا وَعَدَ أَخْلَفَ وَإِذَا اؤتمن خَان»
Abu Huraira reported God's messenger as saying, “There are three signs of a hypocrite.” Muslim added, “Even if he fasts, prays, and asserts that he is a Muslim.” Thereafter both Bukhari and Muslim said, “When he speaks he lies, when he makes a promise he breaks it, and when he is trusted he betrays his trust.”
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About Mishkat al-Masabih
This hadith is #49 from Mishkat al-Masabih, in the Book of Faith.