[537] "And what, bhikkhus, is not a nutriment (anāhāra) for the arising of unarisen dullness and drowsiness (thīna-middha), or for the increase and expansion of arisen dullness and drowsiness? There is, bhikkhus, the element (dhātu) of instigation, the element of endeavour, the element of exertion: frequently giving careful attention (yoniso manasikāra) to them—this is not a nutriment for the arising of unarisen dullness and drowsiness, or for the increase and expansion of arisen dullness and drowsiness."
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.