Ramayana
गृहाण च वरं सौम्य यत्त्वमिच्छस्यरिन्दम । स्वर्गभाङ्नहि शूद्रो ऽयं त्वत्कृते रघुनन्दन ॥ 7-76-8 ॥
And accept a boon, O gentle one, whatever you wish, O subduer of foes; for through your act this Shudra shall not partake of heaven, O delight of the Raghus."
english translation