Ramayana 2.18.24

धर्ममूलमिदं राम विदितं च सतामपि।तत्सत्यं न त्यजेद्राजा कुपितस्त्वत्कृते यथा।।।।

dharmamūlam idaṃ rāma viditaṃ ca satām api | tat satyaṃ na tyajed rājā kupitas tvat-kṛte yathā ||

O Rāma, this is the very root of dharma, known even to the virtuous: the king must not abandon that truth—even if he is angered—on your account.