Ramayana
तस्मिञ्छूद्रे हते देवाः सेन्द्राः साग्निपुरोगमाः । साधु साध्विति काकुत्स्थं प्रशशंसुर्मुहुर्मुहुः ॥ 7-76-5 ॥
When that Shudra had been slain, the gods, together with Indra and led by Agni, praised Kakutstha again and again, crying "Well done! Well done!"
english translation