Anas bin Malik said, "When the emigrants came Medina, they had nothing whereas the Ansar had
land and property. The Ansar gave them their land on condition that the emigrants would give them
half the yearly yield and work on the land and provide the necessaries for cultivation." His (i.e. Anas's
mother who was also the mother of `Abdullah bin Abu Talha, gave some date-palms to Allah' Apostle
who gave them to his freed slave-girl (Um Aiman) who was also the mother of Usama bin Zaid. When
the Prophet (ﷺ) finished from the fighting against the people of Khaibar and returned to Medina, the
emigrants returned to the Ansar the fruit gifts which the Ansar had given them. The Prophet (ﷺ) also
returned to Anas's mother the date-palms. Allah's Messenger (ﷺ) gave Um Aiman other trees from his garden
in lieu of the old gift.
Sahih al-Bukhari Book 51, Hadith 62