大通方廣懺悔滅罪莊嚴成佛經 2.25

2.25

"Good son, there are furthermore four dharmas by which one skillfully obstructs afflictions. What are the four? First, the four mindfulnesses; second, guarding the sense faculties; third, being able to obtain the power of wholesome dharmas; fourth, solitary dwelling and seclusion. These are named the four.