Vishnupurana 2.15.p3

2.15.p3

"The residence of Pulastya was at Viranagara, a big, beautiful city, situated on the banks of the river Devika. And there lived in a beautiful grove near this river, Nidagha, the disciple of Ribhu, acquainted with all devotional practices. After a thousand divine years Ribhu went to the city of Pulastya to see his pupil who stood at the gate after the completion of the sacrifice to Viswadevas. He was beheld by his pupil who came there specially to offer him Arghya, (the usual present) and led him into the house. And when his hands and feet were washed and he was seated Nidagha requested him respectfully to eat.