大方廣佛華嚴經隨疏演義鈔 54.17

54.17

疏「五聞攝淨」，謂聞持智而為能念，其無量法即是所念。持即是念，具能所持，故為法器。論云「一切如來所說祕密法者，一切明廣，祕密顯深。若不持法，不能利他。以聞持而為方便。其無量言便含二義：一多無分量、二深無分量。」

Regarding the Commentary's phrase 'Fifth, purity of hearing and retaining': the cognition that retains what is heard acts as that which is mindful, and the immeasurable dharmas are that which is recollected. Retaining is precisely mindfulness; being endowed with both that which retains and that which is retained, he is a vessel of the Dharma. The treatise says: 'The secret dharmas spoken by all Tathāgatas: "all" clarifies breadth, and "secret" reveals depth. If one does not retain the Dharma, one cannot benefit others. Taking hearing and retaining as the expedient means. The word "immeasurable" contains two meanings: first, immeasurable in quantity; second, immeasurable in depth.'