大毘盧遮那成佛經疏 2.24

2.24

The sūtra says: "Further giving this to those of noble capacity and high virtue is the fourth: the leaf seed." This means that having already become accustomed to practicing wise giving, relying on this as a cause, one gradually becomes able to select the field of giving: "A person like this has lofty and superior virtue; I should now draw near to them and make offerings to them." This is the gradual unfolding of the nature of wisdom, the gradual cause of encountering good spiritual friends (kalyāṇamitra).