Ramayana
कर्दमेनैवमुक्तास्तु सर्व एव द्विजर्षभाः । रोचयन्ति स्म तं यज्ञं रुद्रस्याराधनं प्रति ॥ 7-90-13 ॥
Thus addressed by Kardama, all those bulls among the twice-born approved of that sacrifice as a means of propitiating Rudra.
english translation