And they went up... and he came unto Hebron (Numbers 13:22)
Should it not have read "and they came"? But it was Caleb alone who went to Hebron, to pray at the graves of the Patriarchs, that he not be enticed to join in the conspiracy of the spies. Thus it is written (Deuteronomy 1:36), "And to him (Caleb) I shall give the land upon which he trod"; and it says (Judges 1:20): "And to Caleb they gave Hebron" (as his portion in the Land of Israel).
(Rashi; Talmud, Sotah 34b)
And they carried on a pole, by twos (13:23)
They hung it from two poles, each with two men at each end. Thus it required eight men to carry the cluster of grapes; one carried a fig, and one a pomegranate. Joshua and Caleb did not carry back fruit, for the whole purpose of it was to defame the land: as its fruit is abnormal, so are its inhabitants abnormally large and strong.