Ubeib Bin Khallaf and the Sahaba

Ubeib bin Khallaf started charging upon his horse and when the Sahaba saw this they began to huddle around him. But Ubeib said no he is mine meaning no don't protect me he is mine. He grabbed a spear from one of the Sahaba by the name of a hadtibna Salman so he grabs a spear not a sword not a bow and arrow. And as Ubeib comes rushing he manages to avoid his blow and instead he uses the spear and directly pierces the armor straight into the neck of Ubeib Bin Khallaf.