Sahih al-Bukhari 4664
صحيح البخاري#4664SahihNarrated Ibn Abi Mulaika:When there happened the disagreement between Ibn Az-Zubair and Ibn `Abbas, I said (to the latter), "(Why don't you take the oath of allegiance to him as) his father is Az-Zubair, and his mother is Asma,' and his aunt is `Aisha, and his maternal grandfather is Abu Bakr, and his grandmother is Safiya?
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 65:186