Narrated by Abu Huraira (Radiyallahu `anhu), the Prophet (Sallallaahu `alayhi wa sallam) said,
“(Religious) knowledge will be taken away (by the death of religious scholars) ignorance (in religion) and afflictions will appear; and Harj will increase.” It was asked, “What is Harj, O Allah’s Apostle?” He replied by beckoning with his hand indicating “killing.”

Narrated Abu Huraira (Radiyallaahu `anhu), Allah’s Apostle (Sallallaahu `alayhi wa sallam) said,
“If Allah wants to do good to somebody, He afflicts him with trials.”