Shiva Purana
इत्थं सुतपतस्तस्य पिप्पलादस्य सम्मुखे॥ महाकालो व्यतीयाय लोकचर्यानुसारिणः ॥ ६४॥
As Pippalāda, following the convention of the world, performed the penance, a long time passed by.
english translation
itthaM sutapatastasya pippalAdasya sammukhe॥ mahAkAlo vyatIyAya lokacaryAnusAriNaH ॥ 64॥
hk transliteration by Sanscript