9 – Ibn al-Mulaqqin states in his commentary on al-ʿUmda that a number of scholars have taken this hadith—the report of ʿĀʾishah—as evidence that the natural moisture of a woman’s private part is pure, and this is the sounder view in our Shāfiʿī school.

Al-Mardāwī writes in al-Mughnī: With regard to vaginal moisture there are two transmitted opinions.
The first holds it to be impure, on the grounds that it is a fluid issuing from the vagina that does not give rise to a child, and therefore resembles madhy (pre-ejaculatory fluid).
The second rules it pure, for if we were to deem it impure we would also have to deem her semen impure.

He further says in al-Inṣāf: Concerning vaginal moisture there are two narrations; one judges it pure, and that is the correct position of the Hanbalī school.

Benefit:
Al-Zarkashī divides what issues from a human being into three categories:
1 – Uncontestedly pure: tears, saliva, nasal mucus, spittle, and sweat.
2 – Unquestionably impure: feces, urine, wady, madhy, and blood.
3 – Subject to disagreement: semen—the difference of opinion arising from its passage through the same channel as urine.

Shaykh al-Islām Ibn Taymiyyah said: Semen is pure, and ʿĀʾishah’s sometimes washing it from the Messenger of Allah’s garment and at other times merely rubbing it off does not indicate its impurity, for a garment is likewise washed from nasal discharge or ordinary dirt.
This is also the view of more than one Companion, and it is the well-known position in the school of Imām Aḥmad, may Allah have mercy on him.