Shiva Purana
प्राप्तेऽथ षोडशे वर्षे तस्य राजशिशोः पुनः ॥ ययौ तद्वेश्म सहसा ऋषभः स मदात्मकः ॥ ४१॥
When that prince reached his sixteenth year I as Ṛṣabba, went to his mansion suddenly.
english translation
prApte'tha SoDaze varSe tasya rAjazizoH punaH ॥ yayau tadvezma sahasA RSabhaH sa madAtmakaH ॥ 41॥
hk transliteration by Sanscript