Ramayana
ततस्तस्य परिज्ञाय महास्थैर्यं महामुनेः । ज्ञात्वा तपसि सिद्धिं च पत्न्यर्थं स्पर्शिता तदा ॥ 7-30-29 ॥
"Then, having recognized the great steadfastness of that great sage, and knowing his perfection in austerity, she was at that time given to him to be his wife."
english translation