The five balayas (bala), he adds, are the same as the five indrayas.
The seven bowdyânga (bodhyaṅga) are, according to him: (1) sihi or smirti, the ascertainment of the truth by mental application, (2) dharmmawicha, the investigation of causes. (3) wîraya, persevering exertion, (4) prîti, joy, (5) passadhi, or prasrabdhi, tranquillity, (6) samâdhi, tranquillity in a higher degree, including freedom from all that disturbs either body or mind, (7) upekshâ, equanimity.
It will be seen from this that some of these qualities or excellences occur both as indriyas and bodhyaṅgas, while balas are throughout identical with indriyas.
Burnouf, however, in his Lotus, gives a list of five balas (from the Vocabulaire Pentaglotte) which correspond with the five indriyas of Spence Hardy: viz. sraddhâ-bala, power of faith, vîrya-bala, power of vigor, smriti-bala, power of memory, samâdhi-bala, power of meditation, pragñâ-bala, power of knowledge. They precede the seven bodhyaṅgas both in the Lotus, the Vocabulaire Pentaglotte, and the Lalita-Vistara.
To these seven bodhyaṅgas Burnouf has assigned a special treatise (Appendix xii. p. 796). They occur both in Sanskrit and Pâli.