It has a peaceful flow, by reason of the saṃskāra-s
From habituation of saṃskāra-s of inhibition, there comes about a peaceful flow of the mind. Beginning with the inhibitive saṃskāra, it lasts as long as it is not overcome by a saṃskāra of the character of extraversion.
It mind assuming the inhibitive change has a peaceful flow, by reason of the saṃskāra-s. From habituation of saṃskāra-s of inhibition in view of the habituation, the firmness, of the saṃskāra-s of inhibition there comes about a peaceful flow a calmness of the mind.
As to how long that peaceful flow lasts, he says: The peaceful flow which begins with the inhibitive saṃskāra lasts as long as it, the inhibitive saṃskāra, is not overcome by a saṃskāra with the character of extraversion: having been produced by extraversion, that saṃskāra will have the character of extraversion. The peaceful flow, however, arises from saṃskāra-s of inhibition.