Brihat Parashara Hora Shastra
चक्रानुवक्रा विकला मन्दा मन्दतरा समा । चरा चाऽतिचरा चेति ग्रहाणामष्टधा गतिः ॥ २१॥
Motions of Grahas (Mangal to Śani). Eight kinds of motions are attributed to Grahas.
english translation
cakrAnuvakrA vikalA mandA mandatarA samA । carA cA'ticarA ceti grahANAmaSTadhA gatiH ॥ 21॥
hk transliteration by Sanscript