Matthew Poole and continuators on Deuteronomy 12:21

21 If the place which the LORD thy God hath chosen to put his name there, be too far from thee , then thou shalt kill of thy herd, and of thy flock, which the LORD hath given thee, as I have commanded thee , and thou shalt eat in thy gates whatsoever thy soul lusteth after.

In which case being obliged to carry their sacrifices to the place of worship, that the blood might be there poured forth, &c. they might think themselves obliged, for the same reason to carry their other cattel thither to be killed. They are therefore released from all such obligations, and left at liberty to kill them at home, whether they lived nearer to that place or further from it, onely the latter is here mentioned as being the matter of the scruple, and as containing the former in it.

In such manner as the blood may be poured forth, as above ver. 16. and below ver. 24.