Shiva Purana
आयो मुक्तिस्तथात्रेयो वसिष्ठश्चाव्ययस्स्मृतः ॥ पौलस्त्यः प्रयतिश्चैव भामारश्चैव कश्यपः ॥ ४६॥
Ayo, Mukti, Atreya and Vasishta are said to be inexhaustible. Paulastya, Prayati, Bhamara and Kasyapa.
english translation
Ayo muktistathAtreyo vasiSThazcAvyayassmRtaH ॥ paulastyaH prayatizcaiva bhAmArazcaiva kazyapaH ॥ 46॥
hk transliteration by Sanscript