金剛般若經疏論纂要 1.22

1.22

Third, the time. Master and disciples assembled together, and the preaching and listening were thoroughly complete; therefore it is said, 'At one time.' Because the lengths of divisions of time in various regions are not uniform, it simply says 'one.' Furthermore, at the time of expounding the Dharma and receiving the Dharma, mind and objects are obliterated, principle and wisdom blend, ordinary people and noble ones are as one, and initial and innate [enlightenment] converge; this is the time when all these pairs of dharmas are one.