वेदान्त पारिजात सौरभ (भगवद् निम्बार्काचार्य - द्वैताद्वैत वेदान्त ब्रह्मसूत्र भाष्य सटीक)

[sū. 3. 3. 31.
640 VEDĀNTA-KAUSTUBHA ADH. 13 ]
The path beginning with light is mentioned in certain vidyās,
such as, Upakosala-vidyā ¹, Pañcāgni-vidyā ², Dahara-vidyā ³ and
so on, but is not mentioned in the Madhu-vidyā ⁴, Śāṇḍilya-
¹ Upakosala-vidyā or the knowledge obtained by Upakosala, the disciple
of Satyakāma Jābāla. Vide Chānd. 4.10–4.15. The story begins thus:
Upakosala Kāmalāyana dwelt with Satyakāma Jābāla as a student of sacred
knowledge, and for twelve years he tended the fires. But his teacher did not
allow him to return home, nor did he teach him the knowledge of Brahman, but
went off on a journey. Thereupon, Upakosala, filled with grief, began to fast.
At this the three fires, Gārhapatya, Anvāhāryya and Āhavanīya took pity
on him and each taught him the Agni-vidyā and the Ātma-vidyā, and told him
that the teacher would teach him the path. When the teacher returned, he
proceeded to instruct Upakosala further thus: "That Person who is seen within
the eye is the soul, that is the immortal, the fearless, that is Brahman" (Chānd.
4.15.1)—"Now, whether they perform cremation obsequies in the case of such
a person, (i.e. who knows this vidyā), or not, they (i.e. the dead) pass over to
light, from light to the day, from day to the fortnight of the waxing moon,
from the fortnight of the waxing moon to the six months of the northern progress
of the sun, from those months to the year, from the year to the sun, from the sun
to the moon, from the moon to lightning". Chānd. 4.15.5. Vide V. K. 1.2.13.
² Pañcāgni-vidyā or the doctrine of the five fires, taught to Gautama by
King Pravāhaṇa. Vide Bṛh. 6.2; Chānd. 5.4–5.10. For detailed account see
V.K. 3.1.1.
³ Dahara-vidyā or the doctrine of the Small, i.e. the doctrine that the
Universal Soul is within the heart of man. Vide Chānd. 8.1–8.8; Mahānār. 10.7.
The doctrine begins thus: "Now, what is here in this city of Brahman is a small
lotus-chamber, small is the ether within that. What is within that should be
searched for, that certainly is what one should desire to understand" (Chānd.
8.1.1), and ends: "Now, as a great extending highway goes to two villages, this
one and the yonder, even so these rays of the sun go to two worlds, this one
and the yonder. They extend from the yonder sun and enter into these veins.
They extend from the veins and enter into the yonder sun" (Chānd. 8.6.2).
"But when he thus departs from the body, then he ascends upwards through
those very rays of the sun. With the thought 'Om', forsooth, he passes up.
As quickly as one could direct one's mind to it, he goes to the sun. That,
certainly, is the door to the world (of Brahman), an entrance for knowers, a
stopping for non-knowers" (Chānd. 8.6.5). Vide V. K. 1.3.14–23; 3.3.38.
⁴ Madhu-vidyā or the doctrine of the honey, i.e. the doctrine of the co-
relativity of all things, cosmic and personal, and the immanence of the soul,
taught to the two Aśvinis by Dadhyāñc Ātharvaṇa. Vide Bṛh. 2.5.6–19. It
begins: "This earth is the honey for all creatures and all creatures are honey
for this earth. This shining immortal Person who is in this earth, and with
reference to the self, this shining immortal Person who is in the embodied soul,—
he, indeed, is this Soul, this Immortal, this ALL" (Bṛh. 2.5.1) and goes on with