Sunan Abi Dawud 60
سنن أبي داود#60SahihNarrated Abu Hurairah:The Apostle of Allaah ( sal Allaahu alayhi wa sallam ) said : Allaah, the Exalted, does not accept the prayer of any of you when you are defiled until you performed ablution
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Bukhari (135) Sahih Muslim (225)
In-book reference: 1:60