What is the grammatical relationship in «عَنْ مَنْصُورٍ وَالْمُغِيرَةِ»?

Al-Ḥārith al-Aʿwar: Narrator Criticism, Variant Reports and Evidence

• Al-Mughīrah is nominative as the subject of Zāʾidah
• Al-Mughīrah is a genitive apposition to Ibrāhīm
• Al-Mughīrah is accusative as the object of “ḥaddathanā”
• Al-Mughīrah is genitive, coordinated with Manṣūr; both report from Ibrāhīm