Is semen najis?
It depends on the school. The Hanafi and Maliki schools say semen is impure (najis), while the Shafi'i and Hanbali schools say it's pure. Either way, the practical answer is the same: wash it off your body and clothes. And separately from this question, ejaculation always requires ghusl.
Two questions people mix up
"Is semen najis?" is about whether it makes clothes or skin impure. "Do I need ghusl?" is about your own state. Every school agrees that releasing semen, awake or asleep, requires a full ritual bath before you pray (Sahih Muslim 343). The disagreement is only about the fluid itself. For the bath, see Does a shower count as wudu?
What the hadiths say
Aisha described two different things she did with the Prophet's ﷺ clothes:
- Washing: "I used to wash the traces of Janaba (semen) from the clothes of the Prophet (ﷺ) and he used to go for prayers while traces of water were still on it" (Sahih al-Bukhari 229).
- Scraping: "I simply scraped it off and he offered prayer, while putting that on" (Sahih Muslim 288). In another report, she scraped it off with her nails when it had dried (Sahih Muslim 290).
In the first of these reports, she also told a guest who was washing his whole garment that washing the spot was enough. Scholars read these reports differently.
The four schools
- Hanafi: semen is najis. Wet semen must be washed; dried semen can be scraped or rubbed off, based on the scraping hadith.
- Maliki: semen is najis and must be washed, wet or dry.
- Shafi'i: semen is pure. Washing or scraping it is recommended for cleanliness, not required for prayer.
- Hanbali: semen is pure, as in the Shafi'i view. Washing it is still recommended.
The pure view points out that something impure wouldn't be cleaned by scraping alone. The impure view says washing was the regular practice. Both are respected positions.
What to actually do
Whatever view you follow, washing is the easy path that satisfies everyone. Rinse the spot on your skin during ghusl, and wash the area on clothes or sheets with water. A normal laundry cycle is enough. You don't need to wash things it never touched.
Pre-ejaculate (madhy) is different: all schools agree it's impure. Wash it off and make wudu. The Prophet ﷺ said, "Perform ablution after washing your organ" (Sahih al-Bukhari 269). For general hygiene after the toilet, see Do Muslims have to use water instead of toilet paper?
If you keep checking sheets and underwear for traces, that's a sign of overthinking. See What is waswas and how do I deal with it?
- Hanafi and Maliki: semen is najis. Shafi'i and Hanbali: it's pure.
- Washing it off is the safe choice in every school.
- Ejaculation always requires ghusl.
- Pre-ejaculate (madhy) is impure by agreement and needs washing.
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