Valmiki Ramayana 2.6.5

एकयामावशिष्टायां रात्र्यां प्रतिविबुध्य सः ।अलञ्कारविधिं कृत्स्नं कारयामास वेश्मनः॥

ekayāmāvaśiṣṭāyāṃ rātryāṃ prativibudhya saḥ |alañkāravidhiṃ kṛtsnaṃ kārayāmāsa veśmanaḥ ||

Our plain-language meaning of this verse is waiting for scholar review.