1. A number of our people have narrated from Sahl ibn Ziyad and Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad all from ibn Mahbub and Ahmad ibn Muhammad from ibn abu Nasr all from al-‘Ala’ from Muhammad ibn Muslim who has said the following: “Once abu Ja‘far , made me read something from the books of ‘Ali . Therein I found this: I prohibit you from using eel for food, al-Zimir, (a certain kind of fish), Mar mahi (something like fish), snake fish, dead fish floating on water and the spleen.’ I then asked, ‘O child of the Messenger of Allah, may Allah grant you kindness, ’People bring to us a kind of fish that has no scales.’ He (the Imam) said, ’You can use for food of fish that which has scales and do not use for food the kind of fish which has no scales.’”