Abu Usayd was entrusted with the affairs of the wives of the Prophet (peace and blessings be upon him)

Mus'ab bin Abdullah narrates that Abu Usayd Malik bin Rabi'ah (may Allah be pleased with him) died in the year 40 AH (the Year of Unity). He was the last of the people of Badr to die. He was among those who saw the angels on the day of Badr; later he lost his sight. He was the trustee (guardian) of the Prophet (peace and blessings be upon him) over his pure wives.

Yahya bin Bukayr narrates that Abu Usayd al-Sa'idi (may Allah be pleased with him) died in the year 60 AH, and at that time he was 92 years old.

Abbas bin Sahl bin Sa'd al-Sa'idi narrates: I saw Abu Usayd al-Sa'idi (may Allah be pleased with him) after he had lost his sight; he was short, the hair of his head and beard was white, but the hair of his head was quite thick. He died in Madinah in the year 60 AH at the age of 98, and he was the last of the people of Badr to die.

Ja'far bin Muhammad narrates from his father that Abu Usayd al-Ansari (may Allah be pleased with him) brought some captives from Bahrain. When they were lined up in rows, the Messenger of Allah (peace and blessings be upon him) stood up and looked at them, and there was a woman weeping. He (peace and blessings be upon him) asked: "What is making you weep?" She said that her son had been sold among Banu Abs. The Messenger of Allah (peace and blessings be upon him) said to Abu Usayd: "Ride out right now and bring him back." So Abu Usayd set off and brought him back.
This hadith has an authentic (sahih) chain of narration, but the two Shaykhs (Bukhari and Muslim) did not record it.