From Sahih Muslim (Hadith 7466):
Abdullah b. 'Umar reported that the people encamped along with Allah's Messenger (ﷺ) in the valley of Hijr, the habitations of Thamud, and they quenched their thirst from the wells thereof and kneaded the flour with it. Thereupon Allah's Messenger (ﷺ) commanded that the water collected for drinking should be spilt and the flour should be given to the camels and commanded them that the water for drinking should be taken from that well where the she-camel (of Hadrat Salih) used to come
Reference: Muslim 7466