三彌勒經疏 1.149

1.149

經曰「爾時阿難」以下，第二問答廣說分。此中四：一阿難陳請、二如來許說、三阿難領旨、四如來正答。初中三：初儀式、二彰聖、三陳請。是初也。露右臂者，顯能解佛意也。膝著，顯能領也。「白世尊言」以下，第二彰聖。即為二：初總彰、後別彰。是初也。言事者，即指法也。當來等者，指時。欲請彌勒當來化導事故，故須彰三通智也。縣鑒（音皆彌冥辨）。

From the passage where the sūtra states "At that time Ānanda..." onward is the second [section], the section of broad exposition through question and answer. Here there are four parts: first, Ānanda presents his request; second, the Tathāgata consents to speak; third, Ānanda receives the instruction; fourth, the Tathāgata directly answers. Within the first, there are three: first, the etiquette; second, revealing the sagely [qualities]; third, presenting the request. This is the first. Baring the right shoulder reveals his ability to understand the Buddha's intent. Placing his knee on the ground reveals his ability to receive [the teaching]. From "addressed the World-Honoured One, saying" onward is the second, revealing the sagely [qualities]. This comprises two parts: first, revealing generally; second, revealing specifically. This is the first. The word "matters" directly refers to phenomena. "Future," etc., refers to time. Because he wished to ask about the matters of Maitreya's future transformation and guidance, it was necessary to reveal the wisdom that completely penetrates the three [times]. "Clearly perceives" (the pronunciation is ... discriminating [even what is] profoundly obscure).