37:25As-Saaffaat

I asked: Messenger of Allah! what is party spirit? He replied: That you should help your people in wrongdoing.

What is this, the proclamation of the days of jahiliya (ignorance)? They said: Allah's Messenger, there is nothing serious. The two young men fell into dispute and the one struck at the back of the other. Thereupon he (the Holy Prophet) said: Well, a person should help his brother whether he is an oppressor or an oppressed. If he is the oppressor he should prevent him from doing it, for that is his help; and if he is the oppressed he should be helped (against oppression).

I asked AbuTha'labah al-Khushani: What is your opinion about the verse "Care for yourselves". He said: I swear by Allah, I asked the one who was well informed about it; I asked the Messenger of Allah (ﷺ) about it. He said: No, enjoin one another to do what is good and forbid one another to do what is evil. But when you see niggardliness being obeyed, passion being followed, worldly interests being preferred, everyone being charmed with his opinion, then care for yourself, and leave alone what people in general are doing; for ahead of you are days which will require endurance, in which showing endurance will be like grasping live coals. The one who acts rightly during that period will have the reward of fifty men who act as he does. Another version has: He said (The hearers asked:) Messenger of Allah, the reward of fifty of them? He replied: The reward of fifty of you.

"Help your brother whether he is an oppressor or oppressed." It was said: "O Messenger of Allah! I help him when he is oppressed. But how can I help him when he oppresses?" He said: "Prevent him from oppression, that is your help for him."

“No one of you should refuse to let his neighbor fix a piece of wood to his wall.”