Was not the twiceborn Rishi Vaishampayana too, who killed a Brahmana in ignorance, and was polluted by the slaughter of a child, put down by the gods?
अज्ञानाद् ब्राह्यणं हत्वा स्पृष्टो बालवधेन च। वैशम्पायनविप्रर्षिः किं दैवेन न वारितः॥