Shiva Purana
निर्विण्णः स तु कष्टेन विरक्तोऽभूत्स योगवान्॥ वनाग्नौ दग्धदेहश्च जगाम परमां गतिम्॥ ६०॥
Dejected by sufferings he became detached and practised Yoga. He burnt himself in conflagration and attained the greatest goal.
english translation
nirviNNaH sa tu kaSTena virakto'bhUtsa yogavAn॥ vanAgnau dagdhadehazca jagAma paramAM gatim॥ 60॥
hk transliteration by Sanscript