Valmiki Ramayana Kishkindha Kanda Sarga 60 Shloka 8

अत्र there, सुरैरपि even by Gods, सुपूजितम् worshipped with reverence, आश्रमम् hermitage, आसीत् was situated, यस्मिन् in it, निशाकरो नाम called Nisakara, उग्रतपाः performed rigorous penance, ऋषिः sage, अभवत् lived.

'There was a hermitage nearby, where a revered sage, who was even worshpped by gods lived. His name was Nishakara. He did rigorous penance here.