Ibn ‘Umar reported God’s messenger as saying, "Two types of animals which have died a natural death and two types of blood have been made allowable to us, the two which die a natural death being the fish and the locust, and the two types of blood being the liver and the spleen."
He said that he went with the Prophet to fight at the battle of Khaibar and the Jews came and complained that the people had hastened to take their green dates, 2 so God’s messenger said, ''The property of those who have been given a covenant is not lawful except for the dues which are levied."
2. The reference is to dates which fall from the tree while still green.
Abuz Zubair quoted Jabir’s authority for the statement that God's messenger said, "What the sea throws up and is left by the tide you may eat, but what dies in the sea and floats you must not eat."
Abu Dawud and Ibn Majah transmitted it, but Muhyi as-Sunna said most people hold that it goes no farther back than Jabir.