A potter refused to bring water any longer to Rish Lakish in Tiberias unless he prayed that the potter should be with him in Paradise. Rish Lakish promised that he would pray for him to be among his own companions there. — R. Pinehas told the parable of those who were invited to dine with the king and who were seated according to the seats they brought with them, for each one was asked to bring his own to lean upon.
The Potter of Tiberias Who Traded Water for Paradise
Gaster, Exempla of the Rabbis No. 195