Mahabharata 13.15.14

एकादश तथा चैनं रुद्राणां वृषवाहनम्अस्तुवन्नियतात्मानः कर्मभिः शुभकर्मिणम्

ekādaśa tathā cainaṃ rudrāṇāṃ vṛṣavāhanamastuvanniyatātmānaḥ karmabhiḥ śubhakarmiṇam

Our plain-language meaning of this verse is waiting for scholar review.