大乘百法明門論疏 1.71

1.71

"The five consciousnesses with respect to the sixth consciousness have two conditions: namely, because the five consciousnesses with respect to the sixth consciousness have the sense of clearing the way, there is the immediately antecedent condition; because when arising they do not obstruct each other, there is the sovereign condition; because they do not perfume the sixth consciousness, there is no causal condition; and because they cannot take the sixth consciousness as an object, there is no objective support condition.