Ramayana
गृहीत्वा सलिलं सर्वमुपस्पृश्य यथाविधि । उत्ससर्ज यथा शापं राक्षसेन्द्राय दारुणम् ॥ 7-26-55 ॥
Having taken up all the water and sipped it according to the prescribed rite, he hurled forth a dreadful curse upon the lord of the rakshasas.
english translation