Bhishma said The humiliation of Brahmanas would humiliate the very celestials. By bowing to Brahmanas, one does not, O Yudhishthira, commit any fault.
भीष्म उवाच ब्राह्मणानां परिभवः सादयेदपि देवताः। ब्राह्मणांस्तु नमस्कृत्य युधिष्ठिर न रिष्यते॥