Sunan Abi Dawud, Hadith 65 ⓘ
Narrated 'Abdullah b. 'Umar: The Apostle of Allaah ( sal Allaahu alayhi wa sallam ) said: When there is enough water to fill two pitchers, it does not become impure. Abu Dawud said : Hammad b. Zaid has narrated this tradition on the authority of 'Asim ( without any reference to the Prophet)
حَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ، حَدَّثَنَا حَمَّادٌ، أَخْبَرَنَا عَاصِمُ بْنُ الْمُنْذِرِ، عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ بْنِ عُمَرَ، قَالَ حَدَّثَنِي أَبِي أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " إِذَا كَانَ الْمَاءُ قُلَّتَيْنِ فَإِنَّهُ لاَ يَنْجُسُ " . قَالَ أَبُو دَاوُدَ حَمَّادُ بْنُ زَيْدٍ وَقَفَهُ عَنْ عَاصِمٍ .
also referenced under: Hadith 65 (DarusSalam) & Book 1, Hadith 65 (USC-MSA)