成唯識論述記 4.272

4.272

述曰：一切法無，菩薩不應起大悲捨生死，集菩提資糧。誰有智者為除虛幻之敵，求石女之兒以為軍旅而共摧敵？要賊是有，方求資糧而求斷彼。

The Commentary states: If all phenomena are non-existent, a bodhisattva should not give rise to great compassion, abandon saṃsāra, and accumulate the provisions of bodhi. What wise person, in order to eliminate an illusory enemy, would seek the sons of a barren woman to serve as an army and together destroy the enemy? Only when thieves exist does one seek provisions and seek to cut them off.