Shiva Purana
असाधारणकर्मा च सृष्टिस्थितिलयक्रमात् ॥ एवं त्रिधा चतुर्धा च विभक्ताः पञ्चधा पुनः ॥ १०० ॥
He also performs extraordinary activities in the order of creation, maintenance and annihilation. Thus they were divided into three and four parts and again into five parts.
english translation
asAdhAraNakarmA ca sRSTisthitilayakramAt ॥ evaM tridhA caturdhA ca vibhaktAH paJcadhA punaH ॥ 100 ॥
hk transliteration by Sanscript