Shiva Purana
तैस्तु संच्छादितं सर्वं चतुर्दशविधं जगत् ॥ तान्दृष्टा विविधान्रुद्रान् रुद्रमाह पितामहः ॥ १६ ॥
The fourteen worlds of the universe were filled up by them. On seeing these various Rudras, Brahmā spoke to Śiva.
english translation
taistu saMcchAditaM sarvaM caturdazavidhaM jagat ॥ tAndRSTA vividhAnrudrAn rudramAha pitAmahaH ॥ 16 ॥
hk transliteration by Sanscript