Yes, Jannah is Heaven and Jahannum is Hell.
Jannah is an eternal place for Muslims which is the Islamic conception of paradise. The Arabic word “Jannah” is a shortened version meaning simply “Garden”. According to Islamic eschatology, after death, one will reside in the grave until the appointed resurrection on Yawm al-Qiyāmah (the Day of Judgment). Muslims believe that the treatment of the individual in the life of the grave will be according to his or her deeds in the worldly life. Jannah is often compared to Christian concepts of Heaven. According to Muslim belief, everything one longs for in this world will be there in Paradise.
Paradise itself is commonly described in the Qur’an. The highest level of Paradise is Jannatul Ferdous (فردوس) or Ad’n (Eden), which is where the prophets, the saints, the martyrs and the most truthful and pious people will dwell with their families, provided they too were admitted into Jannah. In contrast to Jannah, the words Jahannam and Nār are used to refer to the concept of Hell.
In Jannah, everyone will be immortal at thirty-three years of age. They shall be devoid of emotions such as sorrow, pain, anger, guilt and jealousy. Inhabitants of Jannah will rejoice in the company of their parents, spouses, and children, given that they too made it into Heaven — conversing and recalling the past.
The Disciples of the Prophet (pbuh) have described the food in Jannah as as never rotting and so sweet it will make any person on earth live without feeling hunger forever. The dwellings for inhabitants will be pleasant, with lofty gardens, shady valleys, fountains scented with camphor or ginger; rivers of water, milk, honey and Sharabun Tahoora (pure drink); delicious fruits of all seasons without thorns; One day in paradise is considered equal to a thousand years on earth. Palaces are made from bricks of gold, silver, pearls, among other things. Traditions also note the presence of horses and camels of “dazzling whiteness”, along with other creatures. Large trees are described, mountains made of musk, between which rivers flow in valleys of pearl and ruby.
The names of the key four rivers in Jannah are Saihan (Syr Darya), Jaihan (Amu Darya), Furat (Euphrates) and Nil (Nile). Salsabil is the name of a spring that is the source of the rivers of Rahma (mercy) and Al-Kawthar (abundance). Sidrat al-Muntaha is a Lote tree that marks the end of the seventh heaven, the boundary where no creation can pass.
In spite of the goodly dwellings given to the inhabitants of paradise, the approval of God and nearness to Him is considered greater. According to the Qur’an, God will bring the elect near to his throne (‘Arsh), a day on which “some faces shall be shining in contemplation of their Lord.” The vision of God is regarded as the greatest of all rewards, surpassing all other joys and those chosen to be in His Company will be the ones superior to all.
Jahannum on the other hand is the Islamic equivalent of Hell: a fearsome place guarded by angels who shall torture its inhabitants for the time assigned. Some shall enter Jahannum for all eternity while others will be allocated a certain amount of time after which they shall be set free to enter Jannah – God shall personally salvage them.
Jahannum has seven gates, Jannah has eight. Each gate of Jahannum is assigned for a specific class of sinners ranging from the tyrants and oppressors to polytheists and hypocrites. Hypocrites are categorized as the worst of all sinners. They shall be in the lowest depths of Hell. The fire of Hell is to be fueled by the bodies of men, women and stones but there is a special circle of Hell — Zamhareer — a special place in Hell which burns its inhabitants with its extreme cold just as it burns them with its heat. It was also stated by Mujaahid and Muqaatil that it is the peak of coldness.
