Mahabharata 3.275.32

3.275.32

vadhārthamātmanastena hṛtā sītā durātmanā |
nalakūbaraśāpena rakṣā cāsyāḥ kṛtā mayā || 32 ||

The wretch, however, abducted Sita for his own destruction. And as regards Sita, I protected her through Nalakuvera's curse. For that person had cursed Ravana of old, saying, that if he ever approached an unwilling woman, his head should certainly be split into a hundred fragments. Let no suspicion, therefore, be thine! O thou of great glory, accept thy wife! Thou hast indeed, achieved a mighty feat for the benefit of the gods, O thou that art of divine effulgence!' And last of all Dasaratha said, 'I have been gratified with thee, O child! Blessed be thou, I am thy father Dasaratha! I command thee to take back thy wife, and rule thy kingdom, O thou foremost of men!' Rama then replied, 'If thou art my father, I salute thee with reverence, O king of kings! I shall indeed, return, at thy command, to the delightful city of Ayodhya!'