[589] At Sāvatthī. "Bhikkhus, there are these four kinds of meditators (jhāyī). What four? Here, bhikkhus, a certain meditator is skilled in concentration (samādhi) regarding concentration, but not skilled in the object (ārammaṇa) regarding concentration. Here again, bhikkhus, a certain meditator is skilled in the object regarding concentration, but not skilled in concentration regarding concentration. Here again, bhikkhus, a certain meditator is neither skilled in concentration regarding concentration nor skilled in the object regarding concentration. Here again, bhikkhus, a certain meditator is both skilled in concentration regarding concentration and skilled in the object regarding concentration. Therein, bhikkhus, the meditator who is both skilled in concentration regarding concentration and skilled in the object regarding concentration — he is the chief, the best, the foremost, the highest, and the most excellent of these four kinds of meditators. Just as, bhikkhus, from a cow comes milk … and the most excellent."
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.