Bulugh al-Maram, Book 1, Hadith 131 (In-Book) ⓘ

And Muslim added: “Even if he does not ejaculate”.

زَادَ مُسْلِمٌ: "وَإِنْ لَمْ يُنْزِلْ " (131)‏.‏ ‏4 ‏- وهي صحيحة أيضا.‏

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also referenced under: Book 1, Hadith 117 (English)