Day 13 covers all of Chapter 8, The Assurance of Future Buddhahood of the Five Hundred Disciples.
Having last month considered the Buddha’s prediction for Pūrṇa, we consider the reaction of the twelve hundred Arhats.
Thereupon the twelve hundred Arhats, who had already obtained freedom of mind, thought:
“We have never been so joyful before. How glad we shall be if we are assured of our future Buddhahood by the World-Honored One just as the other great disciples were!”
Seeing what they had in their minds, the Buddha said to Maha-Kāśyapa:
“Now I will assure these twelve hundred Arhats, who are present before me, of their future attainment of Anuttara-samyak-saṃbodhi one after another. My great disciple Kauṇḍinya Bhikṣu, who is among them, will make offerings to six billion and two hundred thousand million Buddhas, and then become a Buddha called Universal-Brightness, the Tathāgata, the Deserver of Offerings, the Perfectly Enlightened One, the Man of Wisdom and Practice, the Well-Gone, the Knower of the World, the Unsurpassed Man, the Controller of Men, the Teacher of Gods and Men, the Buddha, the World-Honored One. The others of the five hundred Arhats, including Uruvilvā-Kāśyapa, GayaKāśyapa, Nadī-Kāśyapa, Kālodāyin, Udāyin, Aniruddha, Revata, Kapphina, Bakkula, Cunda, and Svāgata, also will attain Anuttara-samyak-saṃbodhi, and become Buddhas also called Universal-Brightness.”