Ramayana
तस्य बुद्धिः समुत्पन्ना निवेश्य सुमहापुरम् । यजेयं दीर्घसत्रेण पितुः प्रह्लादयन्मनः ॥ 7-55-7 ॥
After founding that very great city, a thought arose in him: 'I shall perform a sacrifice with a long sacrificial session, gladdening the heart of my father.'
english translation