Valmiki Ramayana Yuddha Kanda Sarga 70 Shloka 55
Original Shlokaअथर्षभस्समुत्पत्यवानरोरावणानुजम् । मत्तानीकमुपागम्यतस्थौतस्याग्रतोबली ।।6.70.55।।
1 source checked for this shloka
अथ and then, बली endowed with prowess, र्षभः bull, वानरः among Vanaras, उत्पत्य springing up, रावणानुजम् Ravana's brother, मत्तानीकम् Mahaparsva (Mattaneekam), उपागम्य coming near, तस्य his, अग्रतः anger, तस्थौ his, तस्याग्रतो stood in his front.
Rshaba, the bull among Vanaras endowed with prowess, springing up came and stood in front of Mahaparsva.