The Book of Marriage
16/3. Chapter:
Mut'ah Marriage: It was permitted then abrograted, then permitted then abrogated, and it will remain Forbidden until the day of resurrection
Sahih Muslim
وَحَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا وَكِيعٌ، عَنْ إِسْمَاعِيلَ، بِهَذَا الإِسْنَادِ قَالَ كُنَّا وَنَحْنُ شَبَابٌ فَقُلْنَا يَا رَسُولَ اللَّهِ أَلاَ نَسْتَخْصِي وَلَمْ يَقُلْ نَغْزُو .
This hadith has been narrated on the authority of Isma'il with the same chain of transmitters (and the words are): " We were young, so we said: Allah's Messenger, should we not have ourselves castrated? But he (the narrator) did not say; We were on an expedition."
Reference : Sahih Muslim 1404cIn-book reference : Book 16, Hadith 15USC-MSA web (English) reference : Book 8, Hadith 3245