Yet for all that, when Abu Bakr al-Ṣiddīq was asked about the grandmother’s share of inheritance, he said, “Nothing has been allotted to you in the Book of Allah, and I know of nothing for you in the sunnah of the Messenger of Allah ﷺ; nonetheless, ask the people.” So he questioned them, whereupon al-Mughīra ibn Shuʿba and Muḥammad ibn Maslama stood up and testified that the Prophet ﷺ had granted her one-sixth (1). ʿImrān ibn Ḥuṣayn also transmitted this same sunnah.
These three men are certainly not on the level of Abu Bakr and the other caliphs, yet they were singled out with knowledge of this sunnah, and the entire ummah has acted upon it unanimously.
Likewise, ʿUmar ibn al-Khaṭṭāb did not know the sunnah of seeking permission to enter until Abu Mūsā al-Ashʿarī informed him of it and called upon the Anṣār to bear witness (2). And ʿUmar was more knowledgeable than the one who narrated that sunnah to him.
Nor was ʿUmar aware that a woman inherits from her husband’s blood-money; rather, he held the view that the blood-money belongs to the ʿāqila—until