Shloka 1.2.34
द्वितीयः सर्गः — श्लोकप्रादुर्भावः (The Manifestation of the Śloka)
रहस्यं च प्रकाशं च यद्वृत्तं तस्य धीमत: ।रामस्य सहसौमित्रेः राक्षसानां च सर्वश: ।।1.2.33।। वैदेह्याश्चैव यद्वृत्तं प्रकाशं यदि वा रह: ।तच्चाप्यविदितं सर्वं विदितं ते भविष्यति ।।1.2.34।।
na te vāg anṛtā kāvye kācid atra bhaviṣyati | kuru rāma-kathāṃ puṇyāṃ śloka-baddhāṃ manoramām || 1.2.35 ||
In this poem, not a single utterance of yours will be untrue. Compose the sacred story of Rāma—delightful, and bound in ślokas.
The incidents pertaining to sagacious Rama together with Lakshmana, Sita, Bharata, etc. and the rakshasas their deeds, thoughts, unknown or known to everybody and even not known to you, will be revealed to you by my grace.
Satya is explicitly guaranteed: the Ramāyaṇa is to be a truthful account, making truthfulness a foundational dharma of sacred narration.
Brahmā blesses Vālmīki’s composition, assuring its truth and instructing him to craft Rāma’s sacred story in śloka form.
Vālmīki’s truth-speaking vocation as poet-seer, protected from falsehood in his epic utterance.