The Manus are administrators of universal affairs. The word "man"—or, in Sanskrit,  manuṣya —has been derived from the name Manu, for all the members of human society are descendants of the original Manu. According to Vedic calculation, fourteen Manus come and go in a day of Brahmā (4,320,000,000 years). Śrāddhadeva, or Vaivasvata Manu, the seventh Manu in the current series, was begotten by Vivasvān in the womb of Saṁjñā. Vaivasvata Manu and his wife, Śraddhā, had ten sons and a daughter. The history of the descendants of Vaivasvata Manu, listed in the table, is recounted in this volume.