मन्त्रो रथन्तरं चैव हरिमान् वसुमानपि । आदित्या: साधिराजानो नामद्वन्द्वैरुदाह्ता:,सामगानसम्बन्धी मन्त्र, रथन्तरसाम, हरिमान, वसुमान्, अपने स्वामी इन्द्रसहित बारह आदित्य, अग्नि-सोम आदि युगल नामोंसे कहे जानेवाले देवता,
mantro rathantaraṃ caiva harimān vasumān api | ādityāḥ sādhirājāno nāmadvandvair udāhṛtāḥ ||
Nārada said: “The Mantra, the Rathantara (Sāman), and also Harimān and Vasumān; and the Ādityas together with their sovereign (Indra) are spoken of by paired names. These are deities and sacred designations connected with Sāma-chanting, invoked through such dual appellations.”
नारद उवाच
The verse emphasizes the sanctity and precision of Vedic invocation: divine powers and ritual principles are properly approached through established names and paired appellations, especially within the Sāma-chanting tradition.
Nārada is listing or identifying sacred entities and Vedic-ritual designations—Mantras, a prominent Sāman (Rathantara), specific named powers (Harimān, Vasumān), and the Ādityas with Indra—describing how they are traditionally invoked and referred to.