Carasutta
“Carato cepi, bhikkhave, bhikkhuno uppajjati kāmavitakko vā byāpādavitakko vā vihiṁsāvitakko vā. Tañce bhikkhu adhivāseti, nappajahati na vinodeti na byantīkaroti na anabhāvaṁ gameti, carampi, bhikkhave, bhikkhu evaṁbhūto ‘anātāpī anottāpī satataṁ samitaṁ kusīto hīnavīriyo’ti vuccati.
Walking
“Mendicants, suppose a mendicant has a sensual, malicious, or cruel thought while walking. They tolerate it and don’t give it up, dispel it, eliminate it, and obliterate it. Such a mendicant is said to be ‘not keen or prudent, always lazy, and lacking energy’ when walking.