It is narrated from the Prophet of Islam (PBUH) who said:

A fair-minded person always remain fair-minded. If is faced with hardship, he/she is patient, and calamities, do not upset him/her even if he/she is a captive and defeated. And when comfort is replaced with hardship; as slavery, defeat, captivity, darkness and fear of well, did not harm Prophet Yusuf (AS) until Allah (SWT) granted him such a fortune which made rebellious oppressor to become his slave, and made him a prophet and because of him, Divine Mercy was granted to a nation. And patience has such blessings; therefore, be patient and be enthusiastic about it in order to be awarded [1].

[1] Osul Kafi, Babal Sabre.

Source: en.shafaqna.com