First Jhana: Quite secluded from sense pleasures, secluded from unwholesome states of mind, he enters and dwells in the first jhana, which is accompanied by applied thought and sustained thought with rapture (bliss) and happiness born of seclusion. (M.i,1818; Vbh.245)
Second Jhana: With the subsiding of applied thought and sustained thought he enters and dwells in the second jhana, which has internal confidence and unification of mind, is free of applied thought and sustained thought, and is filled with rapture and happiness born of concentration (M.i,181; Vbh. 245)
Third Jhana: With the fading away of rapture, he dwells in equanimity, mindful and discerning; and he experiences in his own person that happiness of which the noble ones say: 'Happily lives he who is equanimous and mindful' — thus he enters and dwells in the third jhana. (M.i,182; Vbh.245)
Fourth Jhana: With the abandoning of pleasure and pain, and with the previous disappearance of joy and grief, he enters and dwells in the fourth jhana, which has neither-pain-nor-pleasure and has purity of mindfulness due to equanimity. (M.i,182; Vbh.245)