ctice to the act of crossing a river. According to AN 7:15, the point where the meditator gains footing on the river bottom, but before getting up on the bank, corresponds to the third stage of awakening, the attainment of non-return. To reach the fourth stage, becoming an arahant, is to go beyond the river and stand on firm ground. 412: See note 39. 421: See note 348. 423: The forms of mastery listed in this verse correspond to the three knowledges that comprised the Buddhaâs Awakening: knowledge of previous lives, knowledge of how beings pass away and are reborn in the various levels of being, and knowledge of the ending of the effluents that maintain the process of birth. - --> - - - -