Shiva Purana
तदूर्ध्वं वृषभो धर्मो ब्रह्मचर्यस्वरूपधृक् । सत्यादिपादयुक्तस्तु शिवलोकाग्रतः स्थितः ८५ ।
Beyond that stands, ahead of Śivaloka, the bull of Virtue in the form of celibacy. It has the legs of Truthfulness etc.
english translation
tadUrdhvaM vRSabho dharmo brahmacaryasvarUpadhRk । satyAdipAdayuktastu zivalokAgrataH sthitaH 85 ।
hk transliteration by Sanscript