Shiva Purana
ततो गुरुस्समादाय विरजानलजं सितम् ॥ भस्म तेनैव तं शिष्यमग्निरित्यादिभिः क्रमात् ॥ ८३ ॥
Then the preceptor took the white fire of Viraja Ashes by that same disciple, fire and so on, in this order.
english translation
tato gurussamAdAya virajAnalajaM sitam ॥ bhasma tenaiva taM ziSyamagnirityAdibhiH kramAt ॥ 83 ॥
hk transliteration by Sanscript