This is the opposite of Sabr. It is a bad habit, and is one which takes away mercy from Allah.
To complain when misfortune falls upon us, shows that we have little faith in Allah. This is because Allah is testing us to see whether we have patience and forbearance.
If we try to overcome the problem, and say "Alhamdulillah it was not worse", then we will pass the test.
If we don't do anything about it and just complain to Allah, and say "Why me!" and "It's not fair!" then we have failed the test, b"ecause Allah tells us in Surah 94, ayat 6: "Verily, with every difficulty there is relief."
This means that no matter what difficulties we have in this world, if we have patience and try our best to remove them, Allah will help us, and we will have relief.
Therefore, if we have patience, then the problem will sort itself out with the grace of Allah.
Many people have a habit of complaining. This is called winging. These are the people who when it is winter, complain that it is too cold, and when it becomes summer, they complain that it is too hot. They will always find some reason to complain or criticise.
The important thing to learn from this lesson is that if you are in a problem, you should put in the effort to get out of that problem. If you are sincere, then Allah will help you. It may take a long time, but in the long run, you will be successful if your heart and intentions are in the correct place.
Nagging:
What is nagging? Nagging means to find fault in a person or scold, or complain without stop.
It is a dreadful habit, and can lead to people being fed up with you and leaving you alone.
If you nag someone, then it means that you keep on reminding them of something every few minutes. People do not like that. If you have something to say, then say it once. People will hear and remember what you said. If you keep on pestering them and remind them over and over then you will see that they will become irritated.
If you are in difficulty, then don't complain to others, don't ask them to help you, but ask Allah for His help.
When Prophet Yusuf (A) was thrown in the well by his brothers, his father was struck with grief. He did not sit there and moan. He took his grief and his complaint directly to the only One who could help him, Allah.
(12:84) "And he turned away from them, and said: "How great is my grief for Joseph!" And his eyes became white with sorrow, and he fell into silent melancholy."
(12:85) "They said: "By God! (never) will you cease to remember Joseph until you reach the last extremity of illness, or until you die!"
(12:86) "He said: "I ONLY COMPLAIN of my distraction and anguish TO GOD and I know from God that which you know not..."
This shows that you should only ask Allah when in need.
A lot of people nag their parents often. If the father or mother say that something will happen, i.e. "We will go for a picnic" then the children keep on reminding, "When are we going, are we going now !!"
They do this so often that the parents feel like saying "Sit down and keep quiet or we won't go at all."
Always remember, when you are told something by someone, then they will try their best to do it. They don't need you to remind them, they know already. If you keep nagging them, it will only cause frustration.
What examples of nagging have you observed? What does it feel to be nagged at by others?