4-47 Muhammad ibn al-Hassan ibn Ahmad ibn al-Walid - may God be pleased with him - narrated that Muhammad ibn al-Hassan al-Saffar quoted on the authority of Ja’far ibn Muhammad ibn Ubaydullah, on the authority of Abdullah ibn Maymun al-Qad’dah that Aba Abdullah as-Sadiq(MGB) said,

“There are four things which will never be satiated by four other things: the Earth will never become satiated with rain; the eyes will never be satiated with seeing; women will never be satiated with men and scholars will never be satiated with knowledge.”