Kokālikaperson
3 discourses
The mendicant who kept slandering Sāriputta and Moggallāna as corrupt, was warned by the Buddha and by the deities, persisted, and after an agonizing death was reborn in the Paduma hell (AN 10.89, SN 6.10) — the canon's standing caution on speech one cannot take back. The Kokālika Sutta collects the Buddha's verses spoken to him (Snp 3.10).
Discourses
After awakening, the Buddha reflects that the Dhamma is too deep to teach and inclines to passivity; the divinity Sahampati appears to plead that beings with little dust in their eyes will understand, and the Buddha surveys the world with compassion and agrees to teach.
PTS 1.149–1.152Verses in the Great Chapter (With Kokālika) on renunciation, ethical conduct, and the path to liberation through solitude and discernment.
PTS 123–130When the mendicant Kokālika repeatedly slanders Sāriputta and Moggallāna, the Buddha defends the two elders; after Kokālika dies in agony, the Buddha teaches a verse on the long hellish destiny of one who slanders the noble ones.
PTS 5.170–5.173