Important point: This is what Mus'ab bin Abd Allah al-Zubayri said, but his nephew al-Zubayr bin Bakkar differed from him (as al-Daraqutni narrated from him in "al-Mu'talif wa al-Mukhtalif" 4/2119), and made "Munyah bint al-Harith bin Jabir" (not Munyah bint Ghazwan bin Jabir) the grandmother of Ya'la bin Umayyah, his father's mother!

Important point: But al-Daraqutni, commenting critically on this statement of his, said: The hadith scholars say of Ya'la bin Umayyah that he is "Ya'la bin Munyah", and that she is his mother. He said: And the hadith scholars and the historians say that Munyah bint Ghazwan is the sister of Utbah bin Ghazwan, the Companion of the Messenger of Allah (peace and blessings be upon him).

Important point: Al-Daraqutni said: And al-Tabari said: Ya'la bin Umayyah bin Abi bin Ubaydah, and his mother is Munyah bint Jabir, the paternal aunt of Utbah bin Ghazwan. We say: Ibn Sa'd (6/47) likewise named Ya'la's mother this way, and also said: She is the paternal aunt of Utbah bin Ghazwan bin Jabir.