A woman came to the Messenger of Allah (ﷺ) and said: What should one do if the blood of menses smears the garment of one amongst us? He (the Holy Prophet) replied: She should scrape it, then rub it with water, then pour water over it and then offer prayer in it.
Sahih Muslim Book 2, Hadith 141
← Previous Hadith I stayed in the house of 'A'isha and had a wet dream (and perceived its effect on my garment), so (in the morning) I dipped both (the clothes) in water. This (act of mine) was watched by a maid-servant of A'isha and she informed her. She (Hadrat A'isha) sent me a message: Whatprompted you to act like this with your clothes? He (the narrator) said: I told that I saw in a dream what a sleeper sees. She said: Did you find (any mark of the fluid) on your clothes? I said: No. She said: Had you found anything you should have washed it. Incase I found that (semen) on the garment of the Messenger of Allah (ﷺ) dried up, I scraped it off with my nails.

Sahih Muslim Book 2, Hadith 140 Next Hadith → This tradition is narrated by Abu Kuraib, Ibn Numair, Abu Tahir, Ibn Wahb, Yahya b. 'Abdullah b. Salim, Malik b. Anas, 'Amr b. Harith on the authority of Hisham b. 'Urwa, with the same chain of transmitters like one transmitted by Yahya b. Sa'id like the above-mentioned.

Sahih Muslim Book 2, Hadith 142