It is narrated from Urwah that Khawlah bint Hakim came to Umar bin Khattab (may Allah be pleased with him) and said, "Indeed, Rabee’ah bin Umayyah benefited from a woman born among the Arabs, and that woman became pregnant from him." Umar (may Allah be pleased with him) went out, dragging his cloak in distress, and said: "This is Mut’ah. If I had already made a statement about it, I would have stoned him."
Hadith Referenceمسند الإمام الشافعي / كتاب النكاح / 1158
Hadith Takhrijاسناده ضعيف، لإنقطاعه فإن عروة لم يسمع من عمر: أخرجه البيهقي : 7 / 206 - وفي المعرفة السنن والآثار له (4337) - وعبد الرزاق (14038)۔