佛說觀佛三昧海經 6.44

6.44

At that time, the Bhagavat in Jambudvīpa took up his three robes and instructed Ānanda, Nanda, Rāhula, and the other five hundred monks to walk upon the great earth on foot. When he first raised his foot, the earth shook in six ways; when he set down his foot, jeweled palaces like the palace of the Brahmā King sprang forth from the earth, palace after palace in succession suspended in the empty sky, following and shining behind the Buddha by the side of the staircase path. Bodhisattva Dharaṇīṃdhara, together with Maitreya and one thousand bodhisattvas, joined their palms simultaneously and praised the immeasurable virtuous deeds of the Tathāgata with myriad billions of sounds. At that time, the Brahmā King and countless hundreds of thousands of Brahmā devas, holding incense burners and immeasurable musical performances to make offerings to the Buddha, stood attending on the left staircase; Śakra Devānām Indra, along with countless devaputras and hundreds of thousands of devīs, playing drums, musical instruments, and singing with strings, also stood on the left staircase; the countless great assembly of śrāvakas and bodhisattvas stood attending on the right staircase.