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 , 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 , had such a comb or combs.”’