Companions of the Messenger of Allah, may Allah bless him and grant him peace, who would put a finger inside their nose, get blood on their fingers, and continue praying. Likewise, their hands would touch boils and wounds, yet it has not been reported that they avoided touching liquids until they had washed their hands. It is also established that they would put meat into a pot, leaving streaks of blood in the water. I know of no disagreement among the scholars that this is excused; they agree that it does not render the liquid impure. What difference, then, is there between blood being in the broth of a pot or another liquid and its being on a knife or something else? And Allah knows best.

He was asked:

A man has sixty qintārs of oil, by the Damascene measure, in a single well, and a mouse falls into it. Does this render it impure or not? Is it permissible to sell or use it? Please give us a ruling; may you be rewarded.

He answered:

Praise be to Allah. According to one of the two positions reported from Ahmad, this does not render it impure; rather, it may be sold and used, provided it has undergone no change. According to one of the two positions reported from him, liquids have the same ruling as water: if the liquid reaches two qullahs in volume, it does not become impure unless it changes. However, the impurity and whatever surrounds it must be discarded. The view that liquids have the same ruling as water has been adopted by a group