[606] At Sāvatthī. … One is skilled in pliancy (kallita) regarding concentration (samādhi) but not skilled in the object (ārammaṇa) regarding concentration. One is skilled in the object regarding concentration but not skilled in pliancy regarding concentration. One is neither skilled in pliancy regarding concentration nor skilled in the object regarding concentration. One is both skilled in pliancy regarding concentration and skilled in the object regarding concentration. Therein, bhikkhus, the meditator (jhāyī) who … is the highest and the most excellent.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.