SB 5.21.15

TEXT 15
 
TEXT
रथनीडस्तु षट्त्रिंशल्लक्षयोजनायतस्तत्तुरीयभागविशालस्तावान्रविरथयुगो यत्र हयाश्छन्दोनामानः सप्तारुणयोजिता वहन्ति देवमादित्यम् ॥ १५ ॥
ratha-nidas tu sat-trimsal-laksa-yojanayatas tat-turiya-bhaga-visalas
tavan ravi-ratha-yugo yatra hayas chando-namanah saptaruna-yojita
vahanti devam adityam.
ratha-nidah-the interior of the chariot; tu-but; sat-trimsat-laksa-yojana-ayatah-3,600,000 yojanas long; tat-turiya-bhaga-one quarter of that measure (900,000 yojanas); visalah-having a width; tavan-so much also; ravi-ratha-yugah-the yoke for the horses; yatra-where; hayah-horses; chandah-namanah-having the different names of Vedic meters; sapta-seven; aruna-yojitah-hooked up by Arunadeva; vahanti-carry; devam-the demigod; adityam-the sun-god.
TRANSLATION
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 Gayatri and other Vedic meters, are harnessed by Arunadeva to a yoke that is also 900,000 yojanas wide. This chariot continuously carries the sun-god.
PURPORT
In the Visnu Purana it is stated:
gayatri ca brhaty usnig
jagati tristup eva ca
anustup paṅktir ity uktas
chandamsi harayo raveh
The seven horses yoked to the sun-god's chariot are named Gayatri, Brhati, Usnik, Jagati, Tristup, Anustup and Paṅkti. These names of various Vedic meters designate the seven horses that carry the sun-god's chariot.

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