 छिद्रं हि मृगयन्तेऽत्र विद्वांसो ब्रह्मराक्षसा:।निहतस्य च यज्ञस्य सद्य: कर्ता विनश्यति।। 
 The learned brahmarakshasas always look out for flaws in the sacrifice so that they can strike into it. If the sacrifice is damaged, the doer of the sacrifice will be immediately destroyed. 