JAMI AL-TIRMIDHI

Exemption therein
(65)

Sayyidina Abbas (RA) narrated that one of the Prophet's (SAW) wives (RA) bathed from a
large tub. The Prophet (SAW) then intended to perform ablution from it, but she said, "O
Messenger of Allah! I was sexually defiled." He said, "Water is not polluted."
 
[Ahmed2102, Ibn e Majah 370, Abu Dawud 68, Nisai 324]