Tirmidhi

English Commentary:
1:
This hadith is not authentic,
and furthermore, there is no explicit authentic hadith in this chapter, as Imam Tirmidhi has clearly stated.
However, the hadith of Umm Salamah radi Allahu anha, which is cited from the two Sahihs () as evidence for its permissibility,
mentions that after completing the ritual bath (ghusl), Umm Salamah presented a towel to the Prophet sallallahu alayhi wa sallam, but he did not take it.
From this, it is established that it was customary to use a towel after the ritual bath (ghusl); that is why Umm Salamah radi Allahu anha presented it.
However, on that occasion, for some reason, he did not use it, and such things happen often.

Note:
(In the chain of narration, "Abu Mu'adh Sulaiman ibn Arqam" is weak,
but the hadith is hasan due to other routes,
see:
Taraaju‘ al-Albani 502,
and al-Sahihah 2099)