Surya Siddhanta
विनाशयति पातो +अस्मिन् लोकानाम् असकृद् यतः। व्यतीपातः प्रसिद्धो +अयम् सञ्ज्ञाभेदेन वैधृतः॥
Since a fault (pdta) at this time often causes the destruction of mortals, it is known as vyatipdta, or, by a difference of title, vdidhrti.
english translation