Kusītārambhavatthusutta
“Aṭṭhimāni, bhikkhave, kusītavatthūni. Katamāni aṭṭha? Idha, bhikkhave, bhikkhunā kammaṁ kattabbaṁ hoti. Tassa evaṁ hoti: ‘kammaṁ kho me kattabbaṁ bhavissati. Kammaṁ kho pana me karontassa kāyo kilamissati. Handāhaṁ nipajjāmī’ti. So nipajjati, na vīriyaṁ ārabhati appattassa pattiyā anadhigatassa adhigamāya asacchikatassa sacchikiriyāya. Idaṁ, bhikkhave, paṭhamaṁ kusītavatthu.
Grounds for Laziness and Arousing Energy
“Mendicants, there are eight grounds for laziness. What eight? Firstly, a mendicant has some work to do. They think: ‘I have some work to do. But while doing it my body will get tired. I’d better have a lie down.’ They lie down, and don’t rouse energy for attaining the unattained, achieving the unachieved, and realizing the unrealized. This is the first ground for laziness.