SN 2.17

niccaṃ utrastam'idaṃ cittaṃ, niccaṃ ubbiggam'idaṃ mano, anuppannesu kicchesu, atho uppatitesu ca, sace atthi anutrastaṃ, taṃ me akkhāhi pucchito'ti.

Ud 2.10

so kho ahaṃ, bhante, evaṃ rakkhito gopito santo bhīto ubbiggo ussaṅkī utrāsī vihāsiṃ. eta'r'ahi kho pan'āhaṃ, bhante, araññagato'pi rukkhamūlagato'pi suññ'āgāragato'pi eko abhīto anubbiggo anussaṅkī anutrāsī app'ossukko pannalomo paradattavutto, migabhūtena cetasā viharāmi.