Musannaf Ibn Abi Shaybah

Hazrat Muhammad bin Abdur Rahman says that I asked Hazrat Saeed bin Musayyib, Hazrat Urwah bin Zubair, Hazrat Sulaiman bin Yasar, and Hazrat Abu Salamah bin Abdur Rahman about the person from whom madhi (pre-seminal fluid) is discharged. All of them said: Consider it like a boil; wash what is visible, and leave what overcomes you.