Mbh 9.42.2b

And she said unto that best of sages, 'Tell me what is there that I shall do for thee.' Filled with rage, the ascetic said unto her, 'Bring hither Vasishtha without delay, so that I may slay him.' Hearing these words the river became agitated. With joined hands the lotus-eyed lady began to tremble exceedingly in fear like a creeper shaken by the wind. Beholding the great river in that plight, the ascetic said unto her, 'Without any scruple, bring Vasishtha unto my presence!' Hearing these words of his, and knowing the evil he intended to do, and acquainted also with the prowess of Vasishtha that was unrivalled on earth, she repaired to Vasishtha and informed him of what the intelligent Vishvamitra had said unto her. Fearing the curse of both, she trembled repeatedly. Indeed, her heart was on the grievous curse (that either of them might pronounce on her). She stood in terror of both. Seeing her pale and plunged in anxiety, the righteous-souled Vasishtha, that foremost of men, O king, said these words unto her.