I say, and with God's success: The leftover water of an animal whose meat is eaten, such as camels, cows, and sheep, is pure and purifying for ritual impurity, as it removes actual impurity from clothing and the body, and it removes ritual impurity which is the minor and major impurity, meaning it is permissible to perform ablution and bathing with it; because its saliva is derived from its flesh, and its flesh is pure. This is unless it is a jallalah - meaning it eats filth which is originally dung - in which case its leftover water is disliked. Refer to: Al-Maraqi, p. 29, and God knows best.