بُلُوغُ الْمَرَامِ
Bulugh al-Maram 1078
Marriage
وَعَنْ أَبِي هُرَيْرَةَ - رضى الله عنه - عَنِ اَلنَّبِيِّ - صلى الله عليه وسلم -قَالَ : { إِنَّ اَللَّهَ تَجَاوَزَ عَنْ أُمَّتِي مَا حَدَّثَتْ بِهِ أَنْفُسَهَا , مَا لَمْ تَعْمَلْ أَوْ تَكَلَّمْ } مُتَّفَقٌ عَلَيْهِ [1] .
Narrated Abu Hurairah (RA): The Prophet (ﷺ) said: "Allah, the Most High, has forgiven my followers what they contemplate on within themselves (i.e. evil thoughts) as long as they do not act upon or speak about them." [Agreed upon].
Sunnah.com reference: Book 8, Hadith 133