Tassevaṃ karoto pathavīkasiṇe vuttanayeneva catutthajjhānaṃ uppajjati.
Ñ(IX,90): As he does so the fourth jhāna arises in him in the way described under the earth kasiṇa.
Ñ: But how then? Does this arise in one in whom the third jhāna has already arisen on the basis of the earth kasiṇa, etc.?
Ñ: It does not.
Ñ: Why not?
Ñ: Because of the dissimilarity of the object.
Mettādīsu uppannatatiyajjhānasseva pana uppajjati, ārammaṇasabhāgatāyāti.
Ñ: It arises only in one in whom the third jhāna has arisen on the basis of lovingkindness, etc., because the object is similar.
Tato paraṃ pana vikubbanā ca ānisaṃsapaṭilābho ca mettāyaṃ vuttanayeneva veditabboti.
Ñ: But after that the versatility and the obtaining of advantages should be understood in the same way as described under lovingkindness.
Ñ: This is the detailed explanation of the development of equanimity.