Brihat Samhita
रुधिरऽननं इति वक्त्रं पञ्चदशात्षोडशाच्च विनिवृत्ते । तत्कालं मुखरोगं सभयं च सुभिक्षं आवहति ॥ ६-०४ ॥
If Mars should begin to retrograde from the 15th or the 16th constellation from that of his reappearance, such retrograde motion is known as rudhirānana; at the time of such reappearance mankind will be afflicted with disease in the face and with various fears, but there will be prosperity in the land.
english translation
rudhira'nanaM iti vaktraM paJcadazAtSoDazAcca vinivRtte । tatkAlaM mukharogaM sabhayaM ca subhikSaM Avahati ॥ 6-04 ॥
hk transliteration by Sanscript