I heard Sulaiman bin Yasar talking about the clothes soiled with semen. He said that `Aisha had said, "I used to wash it off the clothes of Allah's Messenger (ﷺ) and he would go for the prayers while water spots were still visible on them.
Reference: Sahih al-Bukhari 231 In-book : Book 4, Hadith 98 USC-MSA web (English) : Vol. 1, Book 4, Hadith 231 (deprecated)
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