פירוש על בראשית 22:3

וישכם AND HE ROSE EARLY — He was alert to fulfil the command (Pesachim 4a)

AND HE CLEAVED THE WOOD FOR THE BURNT-OFFERING. This illustrates Abraham’s zeal in performing a commandment for he thought that perhaps there would be no wood in that place, and so he carried it for three days. It may be that Abraham disqualified for use as an offering any wood in which a worm is found, as is the law of the Torah,³⁸¹Midoth 2:5. and so he took from his house sound wood for the burnt-offering. Hence it says, And he cleaved the wood for the burnt-offering.

וילך אל המקום, to the land of Moriah.