瑜伽論記 24.33

24.33

第六解等字所取之門，言或住上地或住下地者，此喜貪煩惱，或緣上地或緣下地故也。魔羅者，謂第六天魔也。

Sixth, it explains the gate comprehended by the word "and so forth". As for the phrase "either dwelling on a higher ground or dwelling on a lower ground": this is because the affliction of joyous craving takes either a higher ground or a lower ground as its object. "Māra" refers to the Māra of the sixth heaven.