Ramayana
हर्षात्तदाब्रवीदिन्द्रो मयूरं नीलबर्हिणम् । प्रीतो ऽस्मि तव धर्मज्ञ भुजङ्गाद्धि न ते भयम् ॥ 7-18-23 ॥
Then Indra, out of joy, said to the peacock with its blue plumage, 'I am pleased with you, O knower of righteousness; from the serpent you shall have no fear.'
english translation