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 ʿAbdullah 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. Messenger of Allah ﷺ gave Um Aiman other trees from his garden in lieu of the old gift.  

لَمَّا قَدِمَ الْمُهَاجِرُونَ الْمَدِينَةَ مِنْ مَكَّةَ وَلَيْسَ بِأَيْدِيهِمْ يَعْنِي شَيْئًا وَكَانَتِ الأَنْصَارُ أَهْلَ الأَرْضِ وَالْعَقَارِ فَقَاسَمَهُمُ الأَنْصَارُ عَلَى أَنْ يُعْطُوهُمْ ثِمَارَ أَمْوَالِهِمْ كُلَّ عَامٍ وَيَكْفُوهُمُ الْعَمَلَ وَالْمَئُونَةَ وَكَانَتْ أُمُّهُ أُمُّ أَنَسٍ أُمُّ سُلَيْمٍ كَانَتْ أُمَّ عَبْدِ اللَّهِ بْنِ أَبِي طَلْحَةَ فَكَانَتْ أَعْطَتْ أُمُّ أَنَسٍ رَسُولَ اللَّهِ ﷺ عِذَاقًا فَأَعْطَاهُنَّ النَّبِيُّ ﷺ أُمَّ أَيْمَنَ مَوْلاَتَهُ أُمَّ أُسَامَةَ بْنِ زَيْدِ قَالَ ابْنُ شِهَابٍ فَأَخْبَرَنِي أَنَسُ بْنُ مَالِكٍ أَنَّ النَّبِيَّ ﷺ لَمَّا فَرَغَ مِنْ قَتْلِ أَهْلِ خَيْبَرَ فَانْصَرَفَ إِلَى الْمَدِينَةِ رَدَّ الْمُهَاجِرُونَ إِلَى الأَنْصَارِ مَنَائِحَهُمُ الَّتِي كَانُوا مَنَحُوهُمْ مِنْ ثِمَارِهِمْ فَرَدَّ النَّبِيُّ ﷺ إِلَى أُمِّهِ عِذَاقَهَا وَأَعْطَى رَسُولُ اللَّهِ ﷺ أُمَّ أَيْمَنَ مَكَانَهُنَّ مِنْ حَائِطِهِ وَقَالَ أَحْمَدُ بْنُ شَبِيبٍ أَخْبَرَنَا أَبِي عَنْ يُونُسَ بِهَذَا وَقَالَ مَكَانَهُنَّ مِنْ خَالِصِهِ  

Some people used to allot some date palm trees to the Prophet ﷺ as gift till he conquered Banu Quraiza and Bani An-Nadir, where upon he started returning their date palms to them.  

كَانَ الرَّجُلُ يَجْعَلُ لِلنَّبِيِّ ﷺ النَّخَلاَتِ حَتَّى افْتَتَحَ قُرَيْظَةَ وَالنَّضِيرَ فَكَانَ بَعْدَ ذَلِكَ يَرُدُّ عَلَيْهِمْ