Rig Veda 1.50.8

Sanskrit text [Accents, Plain, Transliterated]:

स॒प्त त्वा॑ ह॒रितो॒ रथे॒ वह॑न्ति देव सूर्य । शो॒चिष्के॑शं विचक्षण ॥
सप्त त्वा हरितो रथे वहन्ति देव सूर्य । शोचिष्केशं विचक्षण ॥
sapta tvā harito rathe vahanti deva sūrya | śociṣkeśaṃ vicakṣaṇa ||

English translation:

“Divine and light-diffusing Sūrya, your seven coursers bear you, bright-haired, in your car.”

Commentary by Sāyaṇa: Ṛgveda-bhāṣya

Sapta haritaḥ = seven rays; seven horses = seven days of the week; or, is there an allusion to seven scattered prismatic rays?

Details:

Ṛṣi (sage/seer): praskaṇvaḥ kāṇvaḥ [praskaṇva kāṇva];
Devatā (deity/subject-matter): sūryaḥ ;
Chandas (meter): pipīlikāmadhyānicṛdgāyatrī;;
Svara (tone/note): Swar;

Padapatha [Accents, Plain, Transliterated]:

स॒प्त । त्वा॒ । ह॒रितः॑ । रथे॑ । वह॑न्ति । दे॒व॒ । सू॒र्य॒ । शो॒चिःऽके॑शम् । वि॒ऽच॒क्ष॒ण॒ ॥
सप्त । त्वा । हरितः । रथे । वहन्ति । देव । सूर्य । शोचिःकेशम् । विचक्षण ॥
sapta | tvā | haritaḥ | rathe | vahanti | deva | sūrya | śociḥ-keśam | vi-cakṣaṇa

Multi-layer Annotation of the Ṛgveda

[Rigveda 1.50.8 English analysis of grammar]