1. Ekadhamma Sutta.-There is no other single condition which, when developed, is conducive to the abandonment of bonds as much as the seven bojjhangas. S.v.88.
2. Ekadhamma Sutta.-There is one condition which, if cultivated, yields great fruit, viz., the concentration on in-breathing and out-breathing. The sutta also describes the method of its practice. S.v.311f.