Qutaybah ibn Sa'id narrated to us, from Malik ibn Anas, from what was read to him, from Sumayy, the freed slave of Abu Bakr, from Abu Salih al-Samman, from Abu Hurayrah, that the Messenger of Allah (peace and blessings be upon him) said: "While a man was walking on a road, he became severely thirsty. He found a well, descended into it, drank, and then came out. There he saw a dog panting and eating the moist earth out of thirst. The man said, 'This dog has reached the same level of thirst as I had reached.' So he descended into the well, filled his leather sock with water, held it in his mouth until he climbed up, and gave the dog water to drink. Allah thanked him for it and forgave him." They said, "O Messenger of Allah, is there indeed a reward for us in these animals?" He said, "In every living creature with a moist liver there is a reward."