Brihat Parashara Hora Shastra
अयनक्षणवारर्तुमासपक्षसमा द्विज। सूर्यादीनां क्रमाज्ज्ञेया निर्विशंकं द्विजोत्तम॥ ३३॥
Grah periods. Ayan, Muhurta, a day (consisting day and night), Ritu, month, fortnight and year: these are the periods allotted to the Grahas from Sūrya to Śani.
english translation
ayanakSaNavArartumAsapakSasamA dvija। sUryAdInAM kramAjjJeyA nirvizaMkaM dvijottama॥ 33॥
hk transliteration by Sanscript