Shiva Purana
रुद्रमूर्त्तेस्सहस्रांशाद्विष्णोश्चैवाभवज्जनिः ॥ स वामदेवचक्रात्मा वारितत्त्वैकनायकः ॥ २१ ॥
Viṣṇu was born from a thousandth part of Rudra. In the form of Vāmadeva wheel he is the presiding deity of the principle of water.
english translation
rudramUrttessahasrAMzAdviSNozcaivAbhavajjaniH ॥ sa vAmadevacakrAtmA vAritattvaikanAyakaH ॥ 21 ॥
hk transliteration by Sanscript