大方廣佛華嚴經疏 52.12

52.12

Seventh, the two gates beginning with "parks and groves" explain the practice within the station of non-attachment. Within this, this gate explains giving free rein to one's feelings in places of roaming; the subsequent gate explains resting and dwelling in comfort and delight. Both apply to the two benefits, where one possesses provisional and real expedient means without attachment. First, this [first gate] can be understood. In the second, the palaces, the four brahmavihāras among the ten are the four immeasurables, which are also causes of the form realm. Hence the Dushi says: "Cultivate the four brahma-practices of loving-kindness, compassion, sympathetic joy, and equanimity." The rest can be understood.