1. Purification
١۔ كِتَابُ الطَّهَارَةِ
I used to rub off the semen from the clothe of the Messenger of Allah ﷺ. He would would pray in it. Abu Dawud said: Mughirah, Abu Ma'shar, and Wasil also narrated it to the same effect. (Using translation from Abū Dāʾūd 372)
«كُنْتُ أَفْرُكُ الْمَنِيَّ مِنْ ثَوْبِ النَّبِيِّ ﷺ»
"I used to see it on the garment of the Messenger of Allah ﷺ and scratch it off." (Using translation from Nasāʾī 299)
كُنْتُ أَرَاهُ فِي ثَوْبِ رَسُولِ اللهِ ﷺ فَأَحُكُّهُ الْمَنِيَّ