大乘百法明門論開宗義決 1.204

1.204

身不自在心極闇劣一門轉者。身不自在無動轉故。即是釋前不自在義。心極闇劣者釋前昧字。一門轉者釋前略字。覺時意識廣取諸境故得明了。在睡眠位唯依意根一門而起故是略也。

"The body not being self-governing, the mind extremely dark and weak, operating through a single gate": the body not being self-governing means that there is no movement or turning; this explains the previous meaning of "not self-governing." "The mind extremely dark and weak" explains the previous word "obscure." "Operating through a single gate" explains the previous word "brief." When awake, the mental consciousness broadly grasps various objects and is therefore clear. In the state of sleep, it arises relying solely on the single gate of the mental faculty, and is therefore "brief."