RV 7

The seventh Mandala of the Rigveda ("book 7", "RV 7") has 104 hymns. In the Rigveda Anukramani, all hymns in this book are attributed to Vashista. Hymn 32 is additionally credited to Sakti Vashista, and hymns 101-102 (to Parjanya) are additionally credited to Kumara Agneya. It is one of the "family books" (mandalas 2-7), the oldest core of the Rigveda.

The hymns are dedicated to Agni, Indra, the Visvadevas, the Maruts, Mitra-Varuna, the Asvins, Ushas (Dawn), Indra-Varuna, Varuna, Vayu (Wind), two each to Sarasvati, Rudra, the Waters, the Adityas, Vishnu, Vastospati, Brhaspati, one each to the Apris, to Vashista, Savitar, Bhaga, the Dadhikras, the Rbhus, Dyaus and Prthivi (Heaven and Earth), Parjanya (Rain) and Indra-Soma. 7.103 is dedicated to the frogs.

...
Wikipedia