Mukhtasar Bukhari (Abridged) 1684 — The Battle of Sayf al-Bahr

Sayyiduna Jarir (may Allah be pleased with him) says in another narration that the sea, by Allah’s command, cast out an animal (a fish) called ambergris. We ate its meat for half a month and applied its fat to our bodies, so our bodies became as healthy and robust as before. In another narration, he says that Sayyiduna Abu Ubaidah (may Allah be pleased with him) said to us, “Eat it.” When we came to Madinah, we related this to the Noble Prophet (peace and blessings of Allah be upon him). He said: “Eat it, it was sustenance sent by Allah. If you have any of it left, feed us as well.” Someone brought some to the Prophet (peace and blessings of Allah be upon him), and he also ate from it.