Sahih al-Bukhari 2483

Abd Allah ibn Yusuf informed us: Malik informed us, from Wahb ibn Kaysan, from Jabir ibn Abd Allah (may Allah be pleased with them both), who said: The Messenger of Allah (peace and blessings be upon him) sent a detachment toward the coast and appointed Abu Ubayda ibn al-Jarrah as its commander. They numbered three hundred, and I was among them. We set out, and when we reached part of the way, our provisions ran out. Abu Ubayda ordered the provisions of the army to be gathered. They were all collected, amounting to two bags of dates. He rationed them to us little by little each day until they were gone; then we received only one date at a time. I said, ‘What use is one date?’ He said, ‘We realized its value when it was gone.’

Then we reached the sea and found a fish as large as a small hill. The army ate from it for eighteen nights. Abu Ubayda ordered that two of its ribs be set upright. Then he ordered that a riding camel be saddled, and it passed beneath them without touching them.