新華嚴經論 23.4

23.4

第四會夜摩天宮說十行，已上空居，表約智慧法空而為行體，即處世無染。又明此天名時分，明菩薩處行，知根生熟、時非時，不妄利生。又知何惑增多、何惑減少，隨惑增減而成熟之。表知根利生名為時分，法空隨行名為空居也。

The fourth assembly takes place in the Yāma Deva Palace to expound the ten practices. Having ascended to dwelling in empty space, this represents taking the wisdom of the emptiness of phenomena as the essence of practice, which is to abide in the world without defilement. It also clarifies that this heaven is named 'division of time' (yāma) to show that as the bodhisattva engages in practice, knowing whether the faculties [of beings] are ripe or immature, and what is timely or untimely, they do not vainly benefit beings. They also know which delusions are increasing and which delusions are decreasing, maturing them in accordance with the increase and decrease of delusions. This represents knowing faculties and benefiting beings as 'division of time,' and accompanying practice with the emptiness of phenomena as 'dwelling in empty space.'