Hadith 1:31
Narrated ‘Aisha (rad):
Allah’s Messenger (ﷺ) used to wash the semen and then go out for prayer in that (very) garment and I could still see the trace of the washing on it. [Agreed upon]
وَعَنْ عَائِشَةَ رَضِيَ اَللَّهُ عَنْهَا, قَالَتْ: { كَانَ رَسُولُ اَللَّهِ - صلى الله عليه وسلم -يَغْسِلُ اَلْمَنِيَّ, ثُمَّ يَخْرُجُ إِلَى اَلصَّلَاةِ فِي ذَلِكَ اَلثَّوْبِ, وَأَنَا أَنْظُرُ إِلَى أَثَرِ اَلْغُسْلِ فِيهِ } مُتَّفَقٌ عَلَيْه ِ (36)
Original Reference: Bulugh al-Maram 27