Prophet Ayyub Alaihissalaam...

 أَنِّي مَسَّنِيَ الضُّرُّ وَأَنْتَ أَرْحَمُ الرَّاحِمِينَ

“And (remember) Ayyub, when he cried to his Lord:
“Verily, distress has seized me, and You are the Most Merciful of all those who show mercy.”

[21:83] Came the answer of Allah:

“So We answered his call, and We removed the distress that was on him, and We restored his family to him, and the like thereof along with them as a mercy from Ourselves and a Reminder for all those who worship Us.”

[21:84] Ibn Kathir in his tafsir mentioned “a Reminder for all those who worship Us”:

We made him an example lest those who are beset by trials think that We do that to them because We do not care for them, so that they may take him as an example of patience in accepting the decrees of Allah  (glorified and exalted be He) and bearing the trials with which He tests His servants as He wills.’ And Allah  (glorified and exalted be He) has the utmost wisdom with regard to that.

Ayyub  (peace be upon him) was a Prophet of Allah  (glorified and exalted be He). It is said he was a descendant of Ibrahim  (peace be upon him) and was extremely wealthy. He had plenty of livestock, cattle, and crops, many children and beautiful houses. Ayyub  (peace be upon him) was a devotee of Allah. He was engaged in constant remembrance of Allah, giving charity to the poor in such an extensive way that it is narrated that an angel said:

“The best creature on earth today is Ayub, a man of noble character who displays excellent patience and always remembers his Generous Lord. He is an excellent model for the worshippers of Allah. In return, his Lord has blessed him with a long life and plenty of riches, yet he is never haughty or selfish. His family, his servants, as well as the needy and the poor share in his good fortune. He feeds and clothes the poor and buys slaves to set them free. He makes those who receive his charity feel as if they are favouring him, so kind and gentle is he.”

Ayyub was tested in all his riches, losing everything he had: possessions, children. Then he was tested with regard to his body until there was no part of it that was healthy except his heart. Everybody around him shunned him: friends, relatives and even strangers; he was left alone on the edge of the city and there was no one who treated him with compassion except for his wife, who took care of him. He lived in a state of indigence, sickness for 13, 17, or 18 years depending on the narrations. The Prophet of Allah, Ayyub (peace be upon him), had the utmost patience! He is the best example of that. So much that Allah praised him in His Glorious Quran:

“…Truly! We found him patient. How excellent a slave! Verily, he was ever oft-returning in repentance to Us”

Subhanallah..... Speechless. 
Read more: http://productivemuslim.com/patience-productivity-and-hardship/#ixzz27LldVnC5