Is the mother of the Companion Sa'd ibn Abi Waqqas the grandmother of the Prophet, may God's prayers and peace be upon him?

Sa'd ibn Abi Waqqas was not a maternal uncle to the Prophet, peace and blessings be upon him, in reality. Rather, he was called so because of their shared lineage through his mother's side. Sa'd's father was Malik ibn Wuhaib, and the Prophet's maternal grandfather was Wahb ibn Abd Manaf ibn Zuhra ibn Kilab. And Banu Zuhra were the maternal uncles of the Prophet, peace and blessings be upon him, because his mother, Aminah, was from among them, and the relatives of the mother are considered maternal uncles.