Ekadhammasutta untranslated

Ekadhammasutta 01. There is no other single condition which, when developed, is conducive to the abandonment of bonds as much as the seven bojjhaṅgas. SN.v.88.

Ekadhammasutta 02. 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. SN.v.311f.