Midrasch zu Jehoschua 19:49

(Bamidbar 26:25) "Only by lot shall the land be divided": ("Only") — excluding Joshua and Calev (who received special portions.) And thus is it written (Judges 15:13) "And to Calev ben Yefuneh was given a portion in the midst of the children by word of the L-rd to Joshua," and (Judges 1:20) "And they gave Chevron to Calev as Moses had spoken," and (Joshua 19:49-50) "And the children of Israel gave a portion to Joshua the son of Nun in their midst. By word of the L-rd they gave him the city that he asked for, Timnath Serach."