Sayyiduna Jabir (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) sent a small detachment towards the seashore. Our provisions ran out, until we gathered the provisions from the whole army, and each day only one date would fall to a person's share. A man said to Sayyiduna Jabir (may Allah be pleased with him): O Abu Abdullah, would one date suffice a person? He said: O my nephew, we felt the loss of it when it ran out. Sayyiduna Jabir (may Allah be pleased with him) said: Meanwhile we saw something very large. When we came near it, it was a fish cast out of the sea. The army stayed there for eighteen days, eating as much as they wished, until they became fat and healthy.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصيد والذبائح / 18964