صَحِيحُ مُسْلِمٍ
Sahih Muslim 127 a
The Book of Faith
Allah allows a person's thoughts and whatever occurs in his heart so long as they do not become established
حَدَّثَنَا سَعِيدُ بْنُ مَنْصُورٍ، وَقُتَيْبَةُ بْنُ سَعِيدٍ، وَمُحَمَّدُ بْنُ عُبَيْدٍ الْغُبَرِيُّ، - وَاللَّفْظُ لِسَعِيدٍ - قَالُوا حَدَّثَنَا أَبُو عَوَانَةَ، عَنْ قَتَادَةَ، عَنْ زُرَارَةَ بْنِ أَوْفَى، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم إِنَّ اللَّهَ تَجَاوَزَ لأُمَّتِي مَا حَدَّثَتْ بِهِ أَنْفُسَهَا مَا لَمْ يَتَكَلَّمُوا أَوْ يَعْمَلُوا بِهِ .
It is narrated on the authority of Abu Huraira that the Messenger of Allah (ﷺ) observed: Verily Allah forgave my people the evil promptings which arise within their hearts as long as they did not speak about them or did not act upon them.
Sahih Muslim, 127 aSahihصحيح