Jami at-Tirmidhi 110
Jami at-Tirmidhi · Book 1: The Book on Purification · What Has Been Related That 'Water Is For Water'
Ubayy bin Ka'b narrated:
حَدَّثَنَا أَحْمَدُ بْنُ مَنِيعٍ ، حَدَّثَنَا عَبْدُ اللَّهِ بْنُ الْمُبَارَكِ ، أَخْبَرَنَا يُونُسُ بْنُ يَزِيدَ ، عَنِ الزُّهْرِيِّ ، عَنْ سَهْلِ بْنِ سَعْدٍ ، عَنْ أُبَىِّ بْنِ كَعْبٍ ، قَالَ إِنَّمَا كَانَ الْمَاءُ مِنَ الْمَاءِ رُخْصَةً فِي أَوَّلِ الإِسْلاَمِ ثُمَّ نُهِيَ عَنْهَا .
"Water is for water,' was only permitted in the beginning of Islam. Then it was prohibited."
Grade: Sahih (Darussalam)