Shiva Purana
गृहीत्वान्यां मृदं शुद्धां तथासौ गुरुभक्तिमान् ॥ शिर आरभ्य पादान्तं विलिप्यादित्यदृष्टया ॥ १९ ॥
He took another piece of pure clay and was so devoted to his spiritual master. Starting from the head and smearing the ends of the feet with the sight of the sun.
english translation
gRhItvAnyAM mRdaM zuddhAM tathAsau gurubhaktimAn ॥ zira Arabhya pAdAntaM vilipyAdityadRSTayA ॥ 19 ॥
hk transliteration by Sanscript