1؎: In some manuscripts, it is "Yahya bin Ma'in"; Al-Mizzi has written "Ibn Ma'in" in Tuhfat al-Ashraf.
2؎: Hasan al-Basri defined rikaz as «الکنز العادی», meaning a treasure buried during the pre-Islamic era of ignorance (jahiliyyah), and every ancient thing is attributed to the 'Ad people «عاد», even if the era of «عاد» is not established. This interpretation of Hasan al-Basri is not found in the version of Sunan Abi Dawud by Lu'lu'i; Imam al-Mizzi has mentioned it in Tuhfat al-Ashraf through the narration of Ibn Dasah.