Narrated by Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: (Once upon a time) a man was walking along a path when he became extremely thirsty. He found a well, so he went down into it and drank water, then came out. There was a dog there, panting and licking the mud out of thirst. The man thought to himself,“This dog is suffering from thirst just as I was suffering from its severity.”So he went down into the well again, filled his sock with water, held it in his mouth, climbed up, and gave the dog water to drink. Allah Almighty appreciated his action and sincerity, and forgave him. (Upon hearing this) the Companions (may Allah be pleased with them) asked: O Messenger of Allah! Is there a reward for us in (showing mercy to) animals as well? He (peace and blessings be upon him) replied: (Yes,) there is a reward in (serving and caring for) every living being with a moist liver.