I asked the Messenger of Allah (ﷺ) about a man who has sexual intercourse with his wife, but leaves her before orgasm. Upon this he (the Holy Prophet) said: He should wash the secretion of his wife, and then perform ablution and ofier prayer.
Reference: Sahih Muslim 346 a In-book : Book 3, Hadith 101 USC-MSA web (English) : Book 3, Hadith 677 (deprecated)
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