Valmiki Ramayana Bala Kanda Sarga 18 Shloka 12
Original Shlokaभरतो नाम कैकेय्यां जज्ञे सत्यपराक्रम:।।1.18.12।। साक्षाद्विष्णोश्चतुर्भागस्सर्वैस्समुदितो गुणै:।
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सत्यपराक्रम: having truthful prowess, साक्षात् manifestly, विष्णो: Visnu's, चतुर्भाग: fourth part, सर्वै: गुणै: with every kind of virtue, समुदित: united with, भरतो नाम named Bharata, कैकेय्याम् of Kaikeyi, जज्ञे was born.
As an incarnation of the fourth part of Visnu, imbued with all virtues, and armed with truth Bharata was born to Kaikeyi.