Itivuttaka 34
This was said by the Blessed One, said by the Arahant, so I have heard: “Monks, a person without ardency, without compunction, is incapable of self-awakening, incapable of Unbinding, incapable of attaining the unsurpassed safety from bondage. A person ardent & compunctious is capable of self-awakening, capable of Unbinding, capable of attaining the unsurpassed safety from bondage.”
With no ardency, no compunction, lazy, with low persistence, full of sloth & drowsiness, shameless, without respect: he’s incapable, a monk like this, of touching superlative self-awakening. But whoever is mindful, masterful, absorbed in jhāna, ardent, concerned, & heedful, cutting the fetter of birth & aging, touches right here a self-awakening un- surpassed.
https://www.dhammatalks.org/suttas/KN/Iti/iti34.html
Copyright: https://creativecommons.org/licenses/by-nc/4.0/ The author of www.dhammatalks.org also states: “There is some uncertainty about the meaning of ‘Commercial’ with regard to the CC NonCommercial License. For example, some consider the sale of content to support a non-profit entity to be ‘NonCommercial.’ The author and copyright holder of the content on this site considers any sale, including by non-profit entities for non-profit purposes, to be ‘Commercial’ and a copyright violation.“