Shiva Purana
भवृद्ध्या सर्वमेतद्धि मन्यते स्वयमैत्यसौ । प्रपंचसारसर्वस्वमनेनैव वशीकृतम् ७४ ।
The word Bhasma means that which has controlled the essence of the whole universe. (Bha—Vṛddhi—flourishing essence. Sma—Svayam. Manyate—considers his own).
english translation
bhavRddhyA sarvametaddhi manyate svayamaityasau । prapaMcasArasarvasvamanenaiva vazIkRtam 74 ।
hk transliteration by Sanscript