Niganthasutta 3.1

3.1

Sa kho so, abhaya, bhikkhu evaṃ sīlasampanno vivicceva kāmehi …pe… catutthaṃ jhānaṃ upasampajja viharati.

Then a mendicant accomplished in ethics, quite secluded from sensual pleasures, secluded from unskillful qualities, enters and remains in the first absorption … second absorption … third absorption … fourth absorption.