The Tipiṭaka in Three Languages

Anupakkilesasutta

Suttapiṭaka · Saṁyuttanikāya · Mahāvaggasaṁyutta · Vol. 19 · Section 486

[486] …unarisen doubt (vicikicchā) arises, and doubt that has arisen leads to greater growth and expansion.

English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.

This passage also appears in 5 other places