Sunan Ibn Majah 518

سنن ابن ماجه#518Sahih

It was narrated from 'Ubaidullah bin 'Abdullah bin 'Umar that his father said:"The Messenger of Allah said: 'If the water is the amount of two or three Qullah, nothing can make it impure (Najis).'" (Sahih) Another chain with similar wording

Scholarly Authentication

We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:

Al-AlbaniSahih

Muhammad Fouad Abd al-BaqiSahih

Zubair Ali ZaiSahih

In-book reference: 1:252

All of Sunan Ibn Majah