Haryaswas (Sk.) The five and ten thousand sons of Daksha, who instead of peopling the world as desired by their father, all became yogis, ‘as advised by the mysterious sage Narada, and remained celibates. “They dispersed through the regions and have not returned.” This means, according to the secret science, that they had all incarnated in mortals. The name is given to natural born mystics and celibates, who are said to be incarnations of the “Haryaswas”.
Source: H.P.Blavatsky - The Theosophical Glossary