The Shaykh (Al-Mufid), may Allah سبحانه وتعالى support him, said: "There is no harm in performing Wudu' (ablution) with the leftover water of horses, mules, donkeys, camels, cows, sheep, and what other birds drink from, except for those birds that eat carrion, as it is disliked to perform Wudu' with their leftover water. If a bird drank and there was blood or a similar impurity on its beak, the water should not be used for purification under any circumstances." This is supported by the narration we cited from Hariz, from Abu al-‘Abbas al-Fadl, as well as the narration we reported from Sama‘ah, from Abu Basir, from Abu Abdullah عليه السلام, and other evidence.
Commentary #16