From the blood of Vritra, O son of Pritha, were born high-crested cocks. Therefore, those fowls are unclean (as food) for the twice-born ones, and those ascetics that have undergone the rite of initiation.
वृत्रस्य रुधिराच्चैव शिखण्डाः पार्थ जज्ञिरे। द्विजातिभिरभक्ष्यास्ते दीक्षितैश्च तपोधनैः॥