Insulting a Muslim is kufr (disbelief or a serious level of ingratitude), and fighting him is fusooq (disobedience).

Mahmood ibn Labeed was one of the longest living companions.

Even though the Prophet (may Allah raise his rank and grant him peace) forbade us from getting angry, he got angry for the sake of Allah, and it is still virtuous for Muslims to get angry for the sake of Allah (not for personal reasons).

According to the hadeeth of Jaabir, oppression is a sin that destroyed those who came before us.

The Prophet (may Allah raise his rank and grant him peace) once told a man who was seeking advice (what means): "Do not get angry." He repeated this each time he asked for advice.

People who misuse the wealth which Allah gave them face a severe threat of Fire on the Day of Judgment.

Aboo Idrees al-Khowlaanee changed his posture, sitting up on his knees, when narrating the hadeeth of Aboo Tharr about the prohibition of backbiting.

The first sin ever committed was hasad (spiteful envy).

The Prophet (may Allah raise his rank and grant him peace) supplicated against some people for Allah to put hardship on them. They are: those who put hardships upon those under their authority in this life.  

According to the hadeeth of Mahmood ibn Labeed, the thing which the Prophet (may Allah raise his rank and grant him peace) feared most for his followers was: showing off.

Breaking promises is one of the main characteristics of the hypocrites.

Suspicion is described as "the most untruthful kind of speech" in one of the hadeeths we studied.

Oppression (thulm) is layers of darkness on the Day of Judgment.

Paradise is forbidden for the one who dies while deceiving those under his authority.

The definition of backbiting is: Mentioning something false about your brother which he would hate to hear.

According to the wording of a hadeeth we studied, a "shadeed" (strong man) is one who does not become angry.

It is never allowed to be suspicious of a Muslim.

Section Four of our book, 130 Hadeeth on Manners, contains a total of less than 30 hadeeth narrations.

Slander is more severely sinful than backbiting.

The hadeeth about not striking in the face does not apply to Muslims, because it is never legislated to strike a Muslim in the first place.