Shiva Purana
योऽसौ सर्वात्मकश्शम्भुस्सोऽहं स शिवोऽस्म्यहम् ॥ इति वै सर्ववाक्यार्थो वामदेव शिवोदितः ॥ ३१ ॥
“I am he who is Śiva, the soul of all and identical with all. I am Haṃsa. I am Śiva.” This is the meaning of all statements, O Vāmadeva, as mentioned by Śiva.
english translation
yo'sau sarvAtmakazzambhusso'haM sa zivo'smyaham ॥ iti vai sarvavAkyArtho vAmadeva zivoditaH ॥ 31 ॥
hk transliteration by Sanscript