Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates: A man asked the Prophet Muhammad (peace be upon him), he said: O Messenger of Allah! We travel by sea. We take a small amount of water with us. If we use it for ablution, we will be left thirsty. Can we perform ablution with the water of the sea? The Prophet Muhammad (peace be upon him) said: Its water is pure and its dead (animals) are lawful.