It is narrated from Sayyidah Umm Salamah (may Allah be pleased with her) that she said: I heard the Messenger of Allah (peace and blessings be upon him) say (while stating his lineage): "Ma'add bin Adnan bin Udad bin Zand bin Thara bin A'raq al-Thara." Then the Messenger of Allah (peace and blessings be upon him) recited: "He destroyed Ad and Thamud and the People of the Well (al-Rass) and many generations between them, whom none knows except Allah." Sayyidah Umm Salamah (may Allah be pleased with her) explained that A'raq al-Thara means Sayyiduna Isma'il bin Ibrahim (peace be upon them both), Zand means Hamaysa', and Thara means Nabt. This hadith has a sahih (authentic) chain of narration, but the two Shaykhs (Bukhari and Muslim) did not record it.