disobeying the command of the Holy Prophet
There was a Christian in Madina. Whenever he heard the words ‘I testify that verily Muhammad is Allah's Apostle,’ in the prayer-call, he - Allah forbid! - used to say: 'May the liar be burnt'!
Accordingly, Allah made him taste the relish of this action of his. It so happened that one night the maidservant brought fire into the house. A spark flew up from it and set the house on fire. The man and his whole house and belongings were reduced to ashes. Such happened to be the consequence of jesting at the prayer-call!
Plenty of exemplary incidents of those who jeered and scoffed at things religious and the religionists are available in historical books, Man's faith is lost by making fun of any religious thing howsoever small it may be. What can be a greater torture than this that by blurting out a single sentence a man goes out of the believers' row and enters the disbelievers' line.
Any directive of religion, howsoever small as regards action it may be, is not small in grade as regards creed and magnitude. Even as sneering at any important part of religion deprives man of the wealth of faith, making fun of lesser Sunnahs like the wearing of beard, and trimming the mustachios, etc. - which are in fact very high and important Sunnahs - is as effective in the deprivation of faith as of prayer, fasting, etc.
Hence we consider it necessary to make mention here of two things concerning this topic. One is this that by way of a specimen we quote here those sentences which when they escape the tongue deliberately or forgetfully or in anger anathematise man. And, secondly, we relate some exemplary incidents of making fun of and jesting at men of religion, as to how Allah Most High punishes those in the world. Also those who jeer at and vex the followers of Sunnah and the orthodox, so that people may take a lesson and save themselves from harassing and hectoring them.
Punishment for Those who sneer At the Holy Prophet 
There is a story related of the Holy Prophet
himself which has been reported by Hazrat Abdal-Rahman bin Abu Bakr al-Siddiq
that a man used to sit in the holy company and whenever the Holy Prophet
talked, that fellow used to make a sneer on his face. The Holy Prophet
said: "Be like that"! Accordingly, that man (always) pulled faces until
he died. In this incident there is mention of vexing through mockery.
The Result Of Administering Medicine Against The
Holy Prophet's
Order
But there is a threat of chastisement even if an action apparently
intended to give comfort causes pain and suffering, as it happened when
the Holy Prophet
was on his deathbed. While he was overcome with the agony of death there
occurred divergence of opinion among the Companions whether or not medicine
should be administered to him, although he had earlier refused to take
medicine and then had fainted.
Some of the Companions were of the opinion that this refusal was of the same type as every sick man does inadvertently in the intensity of the disease and due to un-mindfulness and swooning, whereas others asserted that his holiness's order should be carried out and he should not be considered like the common run of men.
However, a decision was made and medicine was administered to him. When
the Holy Prophet
regained consciousness he said: "Administer the same medicine immediately
to those people, otherwise it is feared that Allah Most High might involve
them in some punishment.”
Here an act had been done out of complete sincerity and under the sentiment
of love, but since it caused inconvenience, the Holy Prophet
ordered them to take the same medicine as otherwise there was apprehension
of their entanglement in divine wrath.
Then how severe will be the divine clutching for an act that is done out of contempt, enmity and vexing, one can only imagine!
