The System of the Vedanta according to Badarayana's Brahma-Sutras and Cankara's Commentary c6.s3.t5.3

c6.s3.t5.3

After Taitt. 2, 1 has briefly explained, how from the Âtman the ether proceeded, from this the wind, from this the fire, from this the waters, from these the earth, from this plants, from these food, from this seed, from this man, and further it is said: this man consists of food (annarasamaya), in this self of food indwells, another, filling it, the Self of breath (prâṇamaya), in this again the self of understanding (manomaya), in this the self of intellect (vijñânamaya), in this lastly, as inmost, the self of bliss (ânandamaya). For each of these five sheath-like selves, indwelling one in the other, are distinguished and specified (perhaps while the form of a bird is present to the thought) the head, the right and left sides (wings), the body, and "the support (literally: the tail), the base." In the case of the self of food, these parts are formed by the parts of the body, in the case of the self of breath, by the vital spirits with the ether (in the heart) and the earth, for the self of understanding by the four Vedas and the Upanishads (âdeça), for the self of intellect by faith, truth, right, piety (yoga) and lordship; for the self of bliss it is said finally: "Love [literally: what is dear] is his head, joy "his right side, rejoicing his left side, bliss his body, Brahman "his support, his base" (Taitt. 2, 5).