俱舍論疏 23.129

23.129

論「若言此經至如見修故」，破通經也。由先見諦作十六行觀，修道如見，故亦十六。

The Śāstra states: "If it is said that this sūtra... up to: because cultivation is like seeing." This refutes their attempt to resolve the sūtra passage. Because one previously saw the truths by practicing the contemplation of the sixteen aspects, the path of cultivation (bhāvanāmārga) is like vision, hence it also has sixteen.