Mahabharat

siva.sh/mahabharat/adi-parva/3/64

एकां नाभिं सप्तशता अराः शरिताः; परधिष्व अन्या विंशतिर अर्पिता अराः अनेमि चक्रं परिवर्तते ऽजरं; मायाश्विनौ समनक्ति चर्षणी ।। १-३-६४ ।।

sanskrit

'The year is but the nave of a wheel to which is attached seven hundred and twenty spokes representing as many days and nights. The circumference of this wheel represented by twelve months is without end. ' ।। 1-3-64 ।।

english translation

ekAM nAbhiM saptazatA arAH zaritAH; paradhiSva anyA viMzatira arpitA arAH anemi cakraM parivartate 'jaraM; mAyAzvinau samanakti carSaNI || 1-3-64 ||

hk transliteration by Sanscript