大乘起信論裂網疏 3.112

3.112

"The subtlest among the coarse" refers to the continuous associated defilement and the defilement associated with discriminative intellect. "The coarsest among the subtle" refers to the defilement non-associated with manifest form and the defilement non-associated with the seeing mind. "Bodhisattvas" refers to those from the stage of the pure mind and above. "The subtlest among the subtle" is the fundamental karma non-associated defilement, the source of which only the Buddha's wisdom can illuminate.