Sunan Ibn Majah

It was narrated from 'Ubaidullah bin 'Abdullah bin 'Umar that his father said:""I heard the Messenger of Allah being asked about water in the wilderness that is frequented by beasts and predators. The Messenger of Allah said: ""If the water reaches the amount of two Qullah, nothing can make it impure (Najis).'"" (Sahih) Another chain with similar wording