Rohita could understand that his father intended to offer him as the animal for sacrifice. Therefore, just to save himself from death, he equipped himself with bow and arrows and went to the forest.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
रोहितस्तदभिज्ञाय पितुः कर्म चिकीर्षितम् । प्राणप्रेप्सुर्धनुष्पाणिररण्यं प्रत्यपद्यत
rohitastadabhijñāya pituḥ karma cikīrṣitam | prāṇaprepsurdhanuṣpāṇiraraṇyaṃ pratyapadyata
SB 9.7.16