Shiva Purana
तेषां मध्ये समारुह्य वृषेंद्रं वृषभध्वजः ॥ जगाम भगवान्भद्रश्शुभमभ्रं यथा भवः ॥ ५७ ॥
In their midst, mounted on a lordly bull and with a bull-emblem, lord Bhadra went ahead like Śiva seated on Nandin.
english translation
teSAM madhye samAruhya vRSeMdraM vRSabhadhvajaH ॥ jagAma bhagavAnbhadrazzubhamabhraM yathA bhavaH ॥ 57 ॥
hk transliteration by Sanscript