It has been reported that he sallallahu alayhi wa sallam went out to his companions and said, "How do you find yourselves this morning?" They replied, "As believers in Allah." He said, "What is the sing of your iman(belief)?" They replied, "We are patient in times of hardship, grateful in times of ease, and content with whatever has been predestined." The Prophet sallallahu alayhi wa sallam said, "By the Lord of the Ka'ba, you are truly believers!"