Vashishta is a manasputra of God Brahma and one of the Saptarishis (Seven Great Sages Rishi). He had the divine cow Kamadhenu and her child, Nandini, who could do anything for their owners. Vashista's wife goes by the name Arundhati. Mandala 7 of the Rigveda is credited to Vashista, one of the nine Prajapatis. In RV 7.33, Vashista and his family are praised for their part in the Battle of the Ten Kings. This makes him the only mortal other than Bhava to be the subject of a Rigvedic hymn. "Vashista Samhita," a book on the Vedic system of electional astrology, is another treatise attributed to him. A few of the stories and folktales that include Vashista are briefly discussed below. Vashista is depicted as Dasharatha's court sage in the Ramayana. The Legend of Vashistha Sage Vashistha was the Rajpurohit of the Ikshwaku dynasty and Ram's guru. He was a great Rishi who valued peace, charity, and intelligence. On the banks of the Beas River, he had established Gurukula, a residential college, where he and his wife Arundhati were taking care of thousands of students. Vashistha was the Sadguru of his time. He had complete knowledge of the god and the universe as well as twenty "kala's," or divine arts. Vedas contain many of his Shlokas as well. Vashistha calls Kamadhenu, also known as Sabala, the cow of abundance, to provide food for a feast. Vashista had a cow named Nandini, the daughter of Kamadhenu, who could immediately produce enough food for an entire army. When the king Kaushika (later Vishwamitra) visited Vashistha's hermitage, he was very impressed by the cow. He tried to force Vashistha to take it away from him, but Kamadhenu/Nandini's spiritual power was too great for him.