Abdullah bin Amr bin As reported,

Riab bin Hudhayfah bin Saeed bin Sahm married Umm Waail bint Muamar al-Jumahiyyah, and she bore him three sons. Their mother passed away, and her sons inherited from her both her property and the right of patronage over her freed slaves. Amr bin As took them with him to Syria, where they died in the plague of Amwas. Amr inherited from them, as he was their paternal kinsman.When Amr bin As returned, the Banu Muamar came to dispute with him before Umar over the right of patronage of their sister's freed slaves.Umar said, "I will judge between you according to what I heard from the Messenger of Allah ﷺ. I heard him say, 'Whatever the child or the parent acquires belongs to their paternal kin, whoever they may be.'"He said, So he ruled in our favor and wrote a document for us to that effect, witnessed by Abdul Rahman bin Awf, Zayd bin Thabit, and another.Later, when Abdul Malik bin Marwan became caliph, one of her freed slaves died leaving two thousand dinars. Word reached me that the earlier ruling had been overturned. They took the dispute before Hisham bin Ismail, and we then brought the matter up to Abdul Malik, presenting him with Umar's document.He said, "I had always considered this to be among the rulings about which there is no doubt. I never imagined that the people of Medina would reach the point of doubting this ruling."So he ruled in our favor regarding it, and we have held the right ever since.

عن عمرو بن شعيب، عن أبيه، عن جده قال

تزوج رئاب بن حذيفة بن سعيد بن سهم أم وائل بنت معمر الجمحية، فولدت له ثلاثة، فتوفيت أمهم فورثها بنوها رباعا وولاء مواليها، فخرج بهم عمرو بن العاص إلى الشام، فماتوا في طاعون عمواس، فورثهم عمرو، وكان عصبتهم. فلما رجع عمرو بن العاص جاء بنو معمر يخاصمونه في ولاء أختهم إلى عمر، فقال عمر: أقضي بينكم بما سمعت من رسول الله ﷺ، هل سمعته يقول: ما أحرز الولد والوالد فهو لعصبته من كان. قال: فقضى لنا به، وكتب لنا به كتابا، فيه شهادة عبد الرحمن بن عوف وزيد بن ثابت وآخر، حتى إذا استخلف عبد الملك بن مروان توفي مولى لها، وترك ألفي دينار، فبلغني أن ذلك القضاء قد غير، فخاصموا إلى هشام بن إسماعيل، فرفعنا إلى عبد الملك، فأتيناه بكتاب، عمر فقال: إن كنت لأرى أن هذا من القضاء الذي لا يشك فيه، وما كنت أرى أن أمر أهل المدينة بلغ هذا أن يشكوا هذا القضاء، فقضى لنا فيه، فلم نزل فيه بعد.