Hadith.18 - Imam Jafar ibn Muhammad Al-Sadiq عليه السلام was asked about water from which a chicken had drunk.
Imam عليه السلام said: "If there is known dirt on its beak, do not perform ablution with it or drink from it. But if there is no known dirt on its beak, you may perform ablution with it and drink from it."
Any animal whose meat is lawful to eat does not render water impure by drinking from it, so ablution and drinking from it are permitted. Ablution with water from which a hawk, falcon, or eagle has drunk is also permissible, provided there is no visible blood on its beak. If blood is seen on its beak, do not use the water for ablution or drinking.
If a person has a nosebleed, and a few small drops of blood fall into their container without visibly affecting the water, ablution from it is allowed. However, if the blood is clearly noticeable in the water, it is not permissible to use it for ablution.
If a chicken, bird, or similar animal steps on dung and then enters water, ablution with that water is not allowed unless it is a large quantity (kurr).
If a dead mouse, rat, or small bird falls into a water container and decays, it is not permitted to drink from or use that water for ablution. If the animal has not decayed, there is no harm in drinking from or using the water for ablution; simply remove the dead animal if it is still fresh. This applies to containers like jars, water pitchers, or skins.
If a mouse or similar animal falls into a well and dies, and bread is kneaded with that well’s water, it is permissible to eat the bread if it has been baked in fire.