Ramayana
न शक्या यज्ञमध्यस्था वेदी सृग्भाण्डमण्डिता । द्विजातिमन्त्रपूता च चण्डालेनावमर्दितुम् ॥ ३-५६-१८
The sacrificial altar adorned with ladles and vessels and sanctified by the sacred mantras recited by brahmins cannot be defiled by a chandala. ॥ 3-56-18॥
english translation
na zakyA yajJamadhyasthA vedI sRgbhANDamaNDitA । dvijAtimantrapUtA ca caNDAlenAvamarditum ॥ 3-56-18
hk transliteration by Sanscript