大通方廣懺悔滅罪莊嚴成佛經 2.21

2.21

"Good son, there are furthermore four dharmas by which one can, life after life, not lose the mind of bodhi. What are the four? First, constantly being mindful of all the Buddhas of the ten directions; second, dedicating whatever merits one produces to all sentient beings, always for the sake of bodhi; third, associating closely with good spiritual friends; fourth, extolling the Mahāyāna. These are named the four.