1. Bojjhanga Sutta. Among the four kinds of deeds - dark with a dark result, dark with a bright result, bright with a bright result and bright with a dark result - the seven kinds of wisdom (bojjhanga) are neither dark nor bright, and conduce to the waning of deeds. A.ii.236f.
2. Bojjhanga Sutta. The seven bojjhangas lead to the Uncompounded (A sankhata). S.iv.361.
3. Bojjhanga Sutta. Describes how concentration on breathing leads to the cultivation of the seven bojjhangas. S.v.312.