وَٱللَّهُ يُحِبُّ ٱلصَّـٰبِرِينَ
And Allah loves As-Sabirun (the patient).
[Al Imran (3): 146]
Allaah has made patience like a horse that never gets tired, an army that can never be defeated and a strong fortress that can never be breached. [Islamqa.com]
Imam Sufyaan ath-Thawri advised:
“Be patient at all times and in all places, for patience leads to righteousness, and righteousness leads to Paradise. Do not become angry and furious, for those two emotions lead to wickedness, and wickedness leads to the Hellfire.”
Biography of Imam Sufyaan ath-Thawri by Salaahud-Deen ibn Ali ibn Abdul-Maujood
Ibn al-Qayyim wrote on patience:
“Patience is the foundation of the believer’s faith which has no other foundation. The one who has no patience has no faith, and if he has any, then it is only a little faith and it is very weak, and such a person worships Allaah as it were upon the edge (i.e. in doubt): if good befalls him, he is content therewith; but if a trial befalls him he turns back on his face (i.e. reverts to disbelief after embracing Islam). He loses both this world and the Hereafter (cf. al-Hajj 22:11). All he gets from them is a losing deal.
The best life is attained by the blessed through patience, and they rise to the highest degrees through their gratitude. So they fly on the wings of patience and gratitude to gardens of delight (i.e., Paradise). That is the bounty of Allaah that He bestows upon whomsoever He will, and Allaah is the Owner of Great Bounty”.
‘Uddat al-Saabireen by Ibn al-Qayyim, p. 3-5.