Comprehensive Heading on Goods That Are Lawful to Exchange in Transactions and Those Unlawful to Exchange

1. Abu Ali al-Ash’ariy has narrated from Muhammad ibn ‘Abd al-Jabbar from Safwan ibn Yahya from ‘Abd al-Hamid ibn Sa‘d who has said the following: “I once asked abu Ibrahim عليه السلام, about the bones of elephants; if it was permissible to sell or buy the combs which were made thereof. He (the Imam) said, ‘It is not unlawful. My father عليه السلام, had such a comb or combs.”’