[260] Bhikkhus, if, while that bhikkhu is practising the forgetting of and non-attention to those thoughts, there still arise evil, unwholesome thoughts connected with desire, connected with hatred, and connected with delusion, then, bhikkhus, that bhikkhu should attend to the stilling of the thought-formation (vitakkasaṅkhārasaṇṭhāna) of those thoughts. As he attends to the stilling of the thought-formation of those thoughts, whatever evil, unwholesome thoughts there are, connected with desire, connected with hatred, and connected with delusion — those are abandoned, those vanish away. With the abandoning of them, the mind (citta) steadies internally, settles down, becomes unified, and becomes concentrated (samādhi).
Just as, bhikkhus, a man might be walking fast, and it might occur to him: 'Why, indeed, am I walking fast? What if I were to walk slowly?' — and he would walk slowly. It might occur to him: 'Why, indeed, am I walking slowly? What if I were to stand?' — and he would stand. It might occur to him: 'Why, indeed, am I standing? What if I were to sit down?' — and he would sit down. It might occur to him: 'Why, indeed, am I sitting? What if I were to lie down?' — and he would lie down. Thus, bhikkhus, that man, having discarded each coarser posture (iriyāpatha), would adopt each subtler posture. Even so, bhikkhus, if, while that bhikkhu is attending to the stilling of the thought-formation of those thoughts, there still arise evil, unwholesome thoughts connected with desire … the mind becomes unified and becomes concentrated.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.