 Some list him as one of the "Saptarishi" (seven great rishi), while in others he is one of the eight or twelve extraordinary sages of the Hindu traditions.The names and details are not consistent across the different Puranas, nor in different manuscript versions of the same Purana.He is variously listed along with Angiras, Atri, Bhrigu, Bhargava, Bharadvaja, Visvamitra, Vasistha, Kashyapa, Gautama, Jamadagni and others.