The Book of Purification and its Sunnah
1/111. Chapter:
What was narrated about the obligation of bath when the two circumcised parts meet
Sunan Ibn Majah
حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ، حَدَّثَنَا عُثْمَانُ بْنُ عُمَرَ، أَنْبَأَنَا يُونُسُ، عَنِ الزُّهْرِيِّ، قَالَ قَالَ سَهْلُ بْنُ سَعْدٍ السَّاعِدِيُّ أَنْبَأَنَا أُبَىُّ بْنُ كَعْبٍ، قَالَ إِنَّمَا كَانَتْ رُخْصَةً فِي أَوَّلِ الإِسْلاَمِ ثُمَّ أُمِرْنَا بِالْغُسْلِ بَعْدُ .
Ubayy bin Ka'b said: "That was a concession that was granted in the early days of Islam, then we were commanded to have a bathe after that."
Reference : Sunan Ibn Majah 609In-book reference : Book 1, Hadith 343English translation : Vol. 1, Book 1, Hadith 609