As for creatures other than fish, they are of two kinds. One kind lives on land, such as the frog and the crab; its consumption is not lawful. The other lives in water and cannot survive on land except as long as a slaughtered animal remains alive. Scholarly opinion concerning this kind differs. Some held that nothing from it is lawful except fish; this is the purport of the view of Abu Hanifah—may Allah have mercy on him. Others held that all dead aquatic creatures are lawful (1), because they are all fish, even though their forms differ—such as the eel (2), which is called the water snake and resembles a snake in form. Its consumption is unanimously permitted. This was the view of Abu Bakr, Umar, Ibn Umar, Ibn Abbas, Zayd ibn Thabit, and Abu Hurayrah; it was also held by Shurayh, al-Hasan, and Ata. It is the view of Malik and the apparent position of al-Shafii’s school.
Others held that if an aquatic animal has a terrestrial counterpart that may be eaten, then its carrion is lawful—for example, the water-cow and the like. But if its terrestrial counterpart may not be eaten, then the carrion of its aquatic counterpart is not lawful—for example, the water-dog, water-pig, water-donkey, and the like.
Al-Awzai said: “Everything whose life is in water is lawful.” He was asked, “Even the crocodile?” He replied, “Yes.”
Al-Shabi said: “If my family ate frogs, I would feed them to them.” Sufyan al-Thawri said: “I hope that there is no harm in eating crab.”
The apparent meaning of the verse is evidence for those who permit all aquatic animals, and so too is the hadith. Abu al-Hasan al-Sarakhsi informed us; Zahir ibn Ahmad informed us; Abu Ishaq al-Hashimi informed us; Abu Musab related from Malik, from Safwan ibn Salman (3), from Said ibn Salamah of the family of Banu al-Azraq, that al-Mughirah ibn Abi Burdah, who was from Banu Abd al-Dar, told him that he heard Abu Hurayrah say:
“A man asked the Messenger of Allah—peace and blessings be upon him—saying, ‘O Messenger of Allah, we travel by sea and carry only a small amount of water with us. If we use it for ablution, we shall become thirsty. May we perform ablution with seawater?’ The Messenger of Allah—peace and blessings be upon him—replied: ‘Its water is purifying, and its dead animals are lawful.’” (4)