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論解五種貪，一、於內身欲身欲貪者，於內身初起欲界微欲，故名欲欲；次起欲界重貪，故名欲貪。又內身是自所欲之法，故言於內身欲；於內身欲上起欲，即能欲之心，此名欲貪。初欲字屬所欲，第二欲字屬能緣，第三欲字結名。

In explaining the five kinds of greed: First, regarding "greed for desire of the body toward the internal body": toward the internal body one initially gives rise to subtle desire of the desire realm, hence it is called "desire for desire"; next, one gives rise to gross greed of the desire realm, hence it is called "kāmarāga." Furthermore, the internal body is a phenomenon that one oneself desires, hence it says "toward the internal body's desire"; giving rise to desire upon the internal body's desire is the mind capable of desiring, and this is called "kāmarāga." The first word "desire" belongs to what is desired, the second word "desire" belongs to the cognizing subject, and the third word "desire" concludes the term.