ذِكْرُ الْبَيَانِ بِأَنَّ الِاغْتِسَالَ إِنَّمَا يَجِبُ عَلَى الْمُحْتَلِمَةِ عِنْدَ الْإِنْزَالِ دُونَ الِاحْتِلَامِ الَّذِي لَا يُوجَدُ مَعَهُ الْبَلَلُ
(the mother of the believers) Um Sulaim, the wife of Abu Talha, came to Messenger of Allah ﷺ and said, "O Messenger of Allah ﷺ! Verily Allah is not shy of (telling you) the truth. Is it necessary for a woman to take a bath after she has a wet dream (nocturnal sexual discharge)?" Messenger of Allah ﷺ replied, "Yes, if she notices a discharge." (Using translation from Bukhārī 282)
أَنَّهَا قَالَتْ جَاءَتْ أُمُّ سُلَيْمٍ امْرَأَةُ أَبِي طَلْحَةَ إِلَى رَسُولِ اللَّهِ ﷺ فَقَالَتْ يَا رَسُولَ اللَّهِ إِنَّ اللَّهَ لَا يَسْتَحْيِي مِنَ الْحَقِّ هَلْ عَلَى الْمَرْأَةِ مِنْ غُسْلٍ إِذَا هِيَ احْتَلَمَتْ؟ قَالَ «نَعَمْ إِذَا رَأَتِ الْمَاءَ»