Avatarika
'असौ वा आदित्यः' इत्यादि अध्यायारम्भे सबन्ध ।अतीतानन्तराध्यायान्ते उक्तम् 'यज्ञस्य मात्रा वेद' इति ।यज्ञविषयाणि च सामहोममन्त्रोत्थानानि विशिष्टफलप्राप्तये यज्ञाङ्गभूतान्युपदिष्टानि ।सर्वयज्ञाना च कार्यनिर्वृत्तिरूप सविता महत्या श्रिया दीप्यते ।स एष सर्वप्राणिकर्मफलभूत प्रत्यक्ष सर्वैरुपजीव्यते ।अतो यज्ञव्यपदेशानन्तर तत्कार्यभूतसवितृविषयमुपासन सर्वपुरुषार्थेभ्य श्रेष्ठतमफल विधास्यामीत्येवमारभते श्रुति —
In plain words
The connection at the start of this chapter begins with the words, 'Yonder indeed is the sun.' At the very end of the preceding chapter, the scripture declared, 'He knows the measure of the sacrifice.' There, the rituals arising from chants, oblations, and sacred mantras were taught as essential limbs of the sacrifice to secure specific rewards. Now, the sun-god Savitṛ, who embodies the ultimate fulfillment of all these sacrifices, radiates with magnificent splendor. This visible sun is the direct, tangible fruit of the actions of all living beings, and everyone depends upon him for life. Therefore, immediately after describing the sacrifices, the scripture begins this section with the purpose of teaching meditation on the sun—the direct effect of those sacrifices—which yields a reward far more excellent than any other human pursuit.
Close to the Sanskrit
The connection at the beginning of the chapter is 'This indeed is the sun' and so on. At the end of the immediately preceding chapter, it was said: 'He knows the measure of the sacrifice.' And the actions arising from Saman chants, oblations, and mantras, which pertain to the sacrifice, were taught as auxiliary parts of the sacrifice for the attainment of specific fruits. And Savitṛ, who is the embodiment of the accomplishment of the effects of all sacrifices, shines with great splendor. This very sun, being the visible fruit of the actions of all living beings, is depended upon by all. Therefore, immediately after the description of the sacrifice, with the intention 'I shall prescribe the meditation on Savitṛ, which is the effect of that sacrifice and which yields the most excellent fruit of all human goals,' the scripture begins in this manner.