Valmiki Ramayana 3.12.33
अमोघः सूर्य संकाशो ब्रह्मदत्तः शर उत्तमः ।दत्तो मम महेन्द्रेण तूणी च अक्षय सायकौ॥
amoghaḥ sūrya saṃkāśo brahmadattaḥ śara uttamaḥ |datto mama mahendreṇa tūṇī ca akṣaya sāyakau ||
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book