Upakkilesasutta

Suttapiṭaka · Majjhimanikāya · Vol. 14 · Section 455

[455] "So then, Anuruddhas, I … . Then, Anuruddhas, it occurred to me: 'Terror (chambhitatta) has arisen in me, and on account of that terror my concentration (samādhi) fell away; when concentration falls away, the light disappears, and so does the vision of forms. Just as, Anuruddhas, if a man were traveling along a highway and murderers were to spring up on both sides of him, terror would arise in him on that account — even so, Anuruddhas, terror arose in me, and on account of that terror my concentration fell away; when concentration falls away, the light disappears, and so does the vision of forms. I shall act in such a way that neither doubt (vicikicchā), nor inattention, nor dullness and drowsiness (thīna-middha), nor terror will arise in me again.'"

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.