[22].Surah Al-Hajj [The Pilgrimage]:Ayat 72

Ayat 72. And when Our Clear Verses are recited to them, you will notice a denial on the faces of the disbelievers! They are nearly ready to attack with violence those who recite Our Verses to them. Say: "Shall I tell you of something worse than that? The Fire (of Hell) which Allah has promised to those who disbelieve, and worst indeed is that destination!"

[Tafseer] When Our Clear Signs are rehearsed to them, thou wilt notice a denial on the faces of the  Unbelievers! they nearly attack with violence those who rehearse Our Signs to them. Say, "Shall I tell you of something (far) worse than these Signs? It is the Fire (of Hell)! Allah has promised it to the Unbelievers! and evil is that destination!" Munkar. (1) a refusal to accept something offered; (2) a denial of something stated or pointed out; (3) a feeling of disapproval or active aversion, or disgust. There is irony here. 'You think Allah's revelations and Signs are distasteful to you! There will be something far more distasteful to you if you do not repent! What do you say to the inevitable Punishment?'

Hazrat Abu Hurairah (May Allah be pleased with him) reported: The Messenger of Allah [SAWW](PBUH) was asked about the deed which will be foremost to lead a man to Jannah. He [SAWW](PBUH) replied, "Fear of Allah and the good conduct.'' Then he was asked about indulgence which will admit a man to Hell (Fire) and he answered, "The tongue and the genitals.''

[At-Tirmidhi Hadith # 2004]. 

Lesson : as mentioned above in Surah Al-Hajj Ayat 72."The Fire (of Hell) which Allah has promised to those who disbelieve" This is also a very comprehensive Hadith. Fear of Allah really links up a man to Him, and moral refinement prevents him from falling short of his duties to people. To be sure, adherence to this two-fold practice will cause the entry of a lot of people to Jannah. Many a man, on the other hand, has a long, sharp and dangerous tongue and this causes him to pour out heretic utterances and indulge in backbiting, slandering and abusive and nonsensical talk. All this activity leads to Hell. As for genitals, an unwary and unrestrained attitude incites one to indulge in immoral pursuits. In both these cases countless people will be led into Hell. For this reason it is imperative for everybody to develop Taqwa (consciousness of Allah / fear of Allah ) and refined behaviour and shun the wickedness of tongue and genitals so that his life in the Hereafter may not be ruined.