Sangitisutta 2.1.102

2.1.102

Idhāvuso, bhikkhuno kāme manasikaroto kāmesu cittaṃ na pakkhandati na pasīdati na santiṭṭhati na vimuccati.

Take a case where a mendicant focuses on sensual pleasures, but on that their mind does not leap forth, gain confidence, settle down, and become decided.