Digha Nikaya

DN 14 Mahāpadāna Sutta:
Seven Fully Enlightened Buddhas

Details of the life and going forth of the Supreme Buddha Vipassī

Samyutta Nikaya

SN 6.14 Arunavati Sutta:
The Discourse of the Arunavati Capital

The Buddha tells a past story of Buddha Sikhī and Arahant Abhibhū visiting the brahma world.