金剛經纂要刊定記 2.207

2.207

師資合會者。謂說者教人以道德曰師，資者取也。從師之教取而行之也。佛及大眾說聽具足故云合會。說畢聽畢故云究竟。意取說無異席貫通首末，故曰一時。《佛地論》云：「此就剎那相續不斷說聽究竟，總名一時。」一時之語佛自言。故《涅槃》云：「昔佛一時在尸首林。」又云：「我於一時在迦尸國。」此則顯說聽能所一切圓畢也。

The meeting together of master and disciple: That is to say, the speaker who teaches others with morality and virtue is called 'master'; 'disciple' (zi) means to receive—receiving the master's teaching and putting it into practice. The Buddha and the great assembly having speaker and listener complete is called 'meeting together.' Preaching being finished and listening being finished is called 'culmination.' The intention takes the preaching as not being at different sessions, running through from beginning to end; hence it is called 'at one time.' The Buddhabhūmi-śāstra states: 'This refers to the culmination of preaching and listening without interruption in kṣaṇa succession, collectively named "at one time."' The phrase 'at one time' was spoken by the Buddha himself. Therefore the Nirvāṇa states: 'Formerly, at one time the Buddha was in the Corpse Grove.' It also states: 'At one time I was in the country of Kāśi.' This clearly shows that all—speaker and listener, subject and object—were completely fulfilled.