大般涅槃經集解 58.8

58.8

案僧亮曰：明此是初發心處，故在此也。寶亮曰：第二，報地恩也。

Sengliang remarks: "He clarifies that this is the place where he first generated the mind [for awakening]; therefore he is here." Baoliang says: "Second, repaying the kindness of the place."