Shiva Purana
भस्मना दिग्धसर्वांगो भस्मदीप्तत्रिपुंड्रकः ॥ भस्मस्नायी च पुरुषो भस्मनिष्ठ इति स्मृतः ॥ ९३ ॥
He who has smeared his body with the ashes, wears Tripuṇḍraka with Bhasma and has a Bhasma bath is Bhasmaniṣṭha.
english translation
bhasmanA digdhasarvAMgo bhasmadIptatripuMDrakaH ॥ bhasmasnAyI ca puruSo bhasmaniSTha iti smRtaH ॥ 93 ॥
hk transliteration by Sanscript