Ramayana
छिद्रं हि मृगयन्तेऽत्र विद्वांसो ब्रह्मराक्षसाः । विघ्नितस्य हि यज्ञस्य सद्यः कर्ता विनश्यति ॥ १-१२-१८
The Brahma-demons will be hunting for the faults performed in the rituals whereat they can inteject themselves in to the proceedings of the ritual in order to ruin it . further, the performer of the ritual also gets ruined. ॥ 1-12-18॥
english translation
chidraM hi mRgayante'tra vidvAMso brahmarAkSasAH । vighnitasya hi yajJasya sadyaH kartA vinazyati ॥ 1-12-18
hk transliteration by Sanscript