維摩經略疏垂裕記 2.56

2.56

Second, in terms of two dharmas, in two parts: first, direct explanation, in two parts: first, stating the purport. "Mutually lacking eyes or feet": if one has eyes without feet, how could one advance? If one has feet without eyes, one will surely fall into deep peril. Because understanding and practice must unite, neither can be present in isolation.