首楞嚴義疏注經 1.31

1.31

此下第十、別解文義。准常三分，謂序、正、流通。序中二：證信、發起。證信之立，由阿難問，佛令置之，意為斷疑息諍及異邪故。然此雖具六種成就，今均廣略，總分為二：初、說經時處；二、引眾同聞。今初也。

Below this is the tenth [section], separately explaining the text and its meaning. In accordance with the usual threefold division, they are the introduction, the main body, and the dissemination. Within the introduction are two: certifying faith and initiating the teaching. The establishment of certifying faith was due to Ānanda's question, which the Buddha commanded to be placed [at the head], the intention being to sever doubt, quell dispute, and put an end to heterodoxy. However, although this possesses the six fulfillments, balancing brevity and elaboration, they are now generally divided into two: first, the time and place of preaching the sūtra; second, citing the assembly that heard it together. Now, the first.