瑜伽論記 16.532

16.532

次明喻，良醫拔箭等者，行者爾時將入見道，在方便中名為良醫，已伏見惑知種可斷，故名知癰熟已，利刃先剖者喻正入聖觀。

Next, explaining the metaphor: Regarding 'a good physician extracting an arrow,' etc., the practitioner at that time is about to enter the path of seeing; while in the expedient means, they are called a 'good physician.' Having already suppressed the afflictions of seeing and knowing that their seeds can be severed, this is called 'knowing that the ulcer is already ripe.' 'First cutting open with a sharp blade' is a metaphor for directly entering the noble discernment.