One of the Salaf, al Imām Fudayl bin Iyād (رضي الله عنه) said,
I learned patience from a small boy.
On my way to the Masjid one day, I came across a woman beating her son at home.
As he was yelling and screaming, he managed to open the door and flee. So his mother locked the door on him.
When I returned from the Masjid, I found the boy after having cried and wept sleeping at the door of his home longing for his mother.
So his mother’s heart softened and she opened the door for him.” Upon witnessing that, Fudayl bin Iyād cried until his beard became wet with tears, and then he said “SubhānAllāh! If only the servant was to be patient at the door of Allāh, Allāh would surely open it!“
“By Allah’s right over you, Do you know who a (true) man is? A (true) man is, by Allah, one who when he finds himself alone with what he desires from the forbidden, and [finds himself] capable of doing it, and yearned in his thirst for it… (BUT) He looked at Allah’s watching over him, and fell ashamed at fulfilling his desires in that which Allah hates, So his thirst [for it] dispersed.”
Whoever wants to follow an example, let him follow the example of those who have passed away, the Companions (sahaabah) of Muhammad صلى الله عليه و سلم. They were the best of this ummah, the purest in heart, the deepest in knowledge, the least in sophistication. They were people whom Allah chose to be the Companions of His Prophet صلى الله عليه و سلم and to convey His religion, so imitate their ways and behaviour, for they were following the Straight Path.”
Abdullaah Ibn Mas’ood (رضي الله عنه ) .[Al-Baghawi in Sharh as-Sunnah]
"...but your Muslim brother is not safe from you?"
Sufyaan ibn Husayn said:
“I mentioned something bad about a man in the presence of Iyaas ibn Mu’aawiyah who looked at me and said: ‘Have you fought against the Romans?’ I said: ‘No.’ He said: ‘What about Sind and India and Turkey?’ I said: ‘No.’ He said: ‘Rome, Sind, India, and Turkey are all safe from you but your Muslim brother is not safe from you?!’ Sufyaan ibn Husayn said: ‘I never did that again.’”
“If Allaah opens for you (gives you success to doing that action) the door of standing for the night prayer then DO NOT look at those who are sleeping with a look of disdain.
And if Allaah opens for you the door of fasting then DO NOT look at those who break their fast with a look of disdain.
And if Allaah opens for you the door of jihad then DO NOT look at those who sit and do not participate with a look of disdain.
Maybe the one who sleeps, breaks his fast and sits is CLOSER to Allaah than you!
Ibn al-Qayyim said: "And indeed that you spent the night sleeping and woke up regretful is BETTER than the one who spent the night standing and woke up admiring himself for indeed the one who admires himself actions are not accepted”