Patimokkhasamvarasutta 3.6

3.6

Yato kho tvaṃ, bhikkhu, sīlaṃ nissāya sīle patiṭṭhāya ime cattāro satipaṭṭhāne evaṃ bhāvessasi, tato tuyhaṃ, bhikkhu, yā ratti vā divaso vā āgamissati vuddhiyeva pāṭikaṅkhā kusalesu dhammesu, no parihānī”ti.

When you develop the four kinds of mindfulness meditation in this way, depending on and grounded on ethics, you can expect growth, not decline, in skillful qualities, whether by day or by night.”