Skandapurana 6.3.103.138

6.3.103.138

rāmo lakṣmaṇaśatrughnau bharatastatra sambhavāt .
kārtavīryo jito yena rāmeṇāmitatejasā .. 103.138 ..

From that arose Rāma, Lakṣmaṇa, Śatrughna, and Bharata. / By that Rāma of boundless splendor was Kārtavīrya conquered;