Valmiki Ramayana 5.2.35

लक्ष्यालक्ष्येण रूपेण रात्रौ लङ्का पुरी मया ।प्रवेष्टुं प्राप्तकालं मे कृत्यं साधयितुं महत्॥

lakṣyālakṣyeṇa rūpeṇa rātrau laṅkā purī mayā |praveṣṭuṃ prāptakālaṃ me kṛtyaṃ sādhayituṃ mahat ||

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