بُلُوغُ الْمَرَامِ
Bulugh al-Maram 28
The Book of Purification
The Cleansing of Najasah and its nature
وَلِمُسْلِمٍ: { لَقَدْ كُنْتُ أَفْرُكُهُ مِنْ ثَوْبٍ رَسُولِ اَللَّهِ - صلى الله عليه وسلم -فَرْكًا, فَيُصَلِّي فِيهِ } [1] .
In the version of Muslim: “I used to scrape it (the semen) off the garment of Allah’s Messenger (ﷺ) and then he offered prayer with it.
Bulugh al-Maram, 28