首楞嚴義疏注經 1.10

1.10

Second, regarding subsumption within the piṭakas and vehicles: among the three piṭakas, it is subsumed under the sūtras (sūtra-piṭaka); between the two piṭakas, it is subsumed under the bodhisattva piṭaka. If this [sūtra] subsumes the others, it concurrently encompasses both the two and the three [piṭakas], because upholding precepts and realizing fruits include the Hīnayāna, and interrogating, refuting, and analyzing are most clearly evident. Among the various vehicles, it is subsumed under the one vehicle; if this [sūtra] subsumes the others, it also encompasses the various vehicles. Among the twelve divisions [of the canon], it is subsumed under the two divisions of sūtra and vaipulya; its subsumption of the others is as before.