रथनीडस्तु षट्त्रिंशल्लक्षयोजनायतस्तत्तुरीयभागविशालस्तावान् रविरथयुगो
यत्र हयाश्छन्दोनामानः सप्तारुणयोजिता वहन्ति देवमादित्यम् ॥१५॥

ratha-nīḍas tu ṣaṭ-trimśal-lakṣa-yojanāyatas tat-turīya-bhāga-viśālas tāvān ravi-ratha-yugo yatra hayāś chando-nāmānaḥ saptāruṇa-yojitā vahanti devam ādityam

 ratha-nīḍaḥ - the interior of the chariot; tu - but; ṣaṭ-trimśat-lakṣa-yojana-āyataḥ - 3,600,000 yojanas long; tat-turīya-bhāga - one quarter of that measure (900,000 yojanas); viśālaḥ - having a width; tāvān - so much also; ravi-ratha-yugaḥ - the yoke for the horses; yatra - where; hayāḥ - horses; chandaḥ-nāmānaḥ - having the different names of Vedic meters; sapta - seven; aruṇa-yojitāḥ - hooked up by Aruṇadeva; vahanti - carry; devam - the demigod; ādityam - the sun-god.


Text

My dear King, the carriage of the sun-god’s chariot is estimated to be 3,600,000 yojanas [28,800,000 miles] long and one-fourth as wide [900,000 yojanas, or 7,200,000 miles]. The chariot’s horses, which are named after Gāyatrī and other Vedic meters, are harnessed by Aruṇadeva to a yoke that is also 900,000 yojanas wide. This chariot continuously carries the sun-god.

Purport

In the Viṣṇu Purāṇa it is stated:

gāyatrī ca bṛhaty uṣṇig
 jagatī triṣṭup eva ca
anuṣṭup paṅktir ity uktāś
 chandāṁsi harayo raveḥ

The seven horses yoked to the sun-god’s chariot are named Gāyatrī, Bṛhati, Uṣṇik, Jagatī, Triṣṭup, Anuṣṭup and Paṅkti. These names of various Vedic meters designate the seven horses that carry the sun-god’s chariot.