Imam Ahmad ibn Hanbal

"The dunya is the abode of one who has no abode, and the wealth of one who has no wealth. Whoever gathers for it, works for it, and loves it has sold the good in exchange for the bad."

"Salah is the pillar of the deen. Whoever establishes it has established the deen, and whoever destroys it has destroyed the deen."

"Bear patiently that which afflicts you — indeed it was for this that the Messengers before you were sent."