Valmiki Ramayana Ayodhya Kanda Sarga 6 Shloka 6

तत्र there (in the last watch of the night), सूतमागधवन्दिनाम् of bards and panegyrists, सुखाः pleasant, वाचः words, श्रृण्वन् listening, पूर्वां सन्ध्याम् early morning rites, उपासीनः had attended, यतमानसः with controlled mind, जजाप chanted (Gayatri).

Then (in the last watch of the night) hearing the pleasant words of bards and panegyrists he attended to early morning rites and intoned Gayatri with a concentrated mind.