大毘盧遮那成佛經疏 2.31

2.31

「祕密主！彼云何貪心？謂隨順染法」者，謂染著前境，即是染污淨心。若隨順修行此法，名有貪心。以心法微細難識，但觀彼所為事業，必有相彰于外。譬如鑒烟之狀貌，則火性可以比知。故諸句多以順修明義，以可例然也。此等皆是未得出世心以來與善種種雜起之心，若行者善識真偽，猶如農夫務除穢草以輔嘉苗，則淨心勢力漸漸增長。勿謂是因緣事相，輕忽至言，使心沒其中不自覺知也。

“Vajrapāṇi, what is that mind of greed? It means following defiled phenomena.” This means being defiled and attached to the objective realm before one, which is defiling the pure mind. If one follows and cultivates this phenomenon, it is called having a mind of greed. Because mental phenomena are subtle and difficult to discern, one merely observes the activities performed by them, which must have characteristics manifested externally. For example, by observing the appearance of smoke, the nature of fire can be known by inference. Therefore, most of the phrases clarify the meaning through following and cultivating, as can be analogously understood. All these are minds that arise mixed with various goods before one attains the supramundane mind; if the practitioner skillfully discerns the true from the false, just as a farmer strives to eliminate weeds to support the fine sprouts, the power of the pure mind will gradually increase. Do not regard them merely as matters of cause and condition and disregard these ultimate words, causing the mind to sink into them without self-awareness.