To make the Heart Tender (Ar-Riqaq)

Bukhari :: Book 8 :: Volume 76 :: Hadith 444

Narrated Ibn 'Abbas:

I heard the Prophet saying, "If the son of Adam (the human being) had two valley of money, he would wish for a third, for nothing can fill the belly of Adam's son except dust, and Allah forgives him who repents to Him."