He told that one of the arguments put forward by 'Umar was that he said Allah's Messenger ﷺ received three things exclusively to himself

the B. an-Nadir, Khaibar and Fadak.1 The B. an-Nadir property was kept wholly for his own purposes,2 Fadak for travellers, and Khaibar was divided by Allah's Messenger ﷺ into three sections, two for the Muslims and one as a contribution for his family. If anything remained after making the contribution to his family, he divided it among the poor Emigrants. 1. Fadak was near Khaibar. It capitulated without fighting. 2. This would include, besides personal needs, the cost of entertaining guests, providing weapons and animals, etc. Abu Dawud transmitted it.