Or HaChaim on Exodus 13:11/אור החיים על שמות י״ג:י״א

1 והיה כי יביאך, "It will be when He will bring you, etc." The Torah underlines once more that it is G'd who will bring you to the Holy Land so that you should not forget about His commandments in the belief that you yourself have achieved all this, especially after your border will gradually extend further and further. Although this commandment is not applicable until after conquest of the land, it remains in force even if the land is lost as it is a commandment that involves the body and not the earth. Kidushin 36 teaches that all commandments which are performed by one's body apply throughout the ages and wherever a Jew resides.