法華論疏 3.115

3.115

"Taking the three as one to cause them to enter the Mahāyāna" does not mean there is another one existing apart from the three; it means integrating the triyāna to ultimately return to the ekayāna, just as gathering three heaps of rice forms one dou of rice. The treatise's grand theme is like this; hence the text below says: "breaking the two to return to the one." Furthermore, the text above says: "the three vehicles are the same as the one vehicle because they share the same dharmakāya."