俱舍論疏 18.66

18.66

論「由彼大士至皆能荷負」，釋他惡行違逆不退所以。由無退故，頌中名「堅」。《正理》云「豈不未修妙相業位菩提心不退，應立住定名，何故要修妙相業位菩薩方受住定位名？爾時人、天方共知故。先時但為諸天所知，或於爾時趣等覺定，先唯等覺決定非餘。」解云：先時唯有決定趣等覺，非有餘六定也。

The Śāstra states: "Due to that great being [...] he is entirely capable of shouldering them." This explains why he does not regress in the face of others' evil deeds and opposition. Because he is without regression, the stanza names him "firm". The Nyāyānusāra states: "Would not the stage in which one has not yet cultivated the karma of the exquisite marks, but whose bodhicitta does not regress, deserve the name of 'dwelling in certitude'? Why must a bodhisattva only receive the name of the stage of dwelling in certitude when cultivating the karma of the exquisite marks? Because at that time humans and devas together come to know it. Previously, he was only known by the devas; or at that time his certitude of progressing toward equal enlightenment is established, whereas previously only equal enlightenment was determined, not the rest." The explanation says: Previously, he was only determined to progress toward equal enlightenment, and did not possess the other six certitudes.