Reward of deeds is based on Intention

Prophet Muhammad (Peace and blessings of Allah be upon him) said :

The reward of deeds depends upon the intentions and every person will get the reward according to what he has intended. (Al-Bukhari)

Iman will save us from Hell

Prophet Muhammad (Peace and blessings of Allah be upon him) said :

When the people of Jannah will enter Jannah and the people of Jahannam will go to Jahannam, Allah will command to Angels to take out people from Jahannam who have had Iman equal to the weight of a grain of mustard seed. So they will be taken out, but they will be blackened (charred by the fire of Hell). Then they will be put in the river and they will revive like a grain that grows near the bank of a flood channel. (Al-Bukhari)

Who will receive sweetness of Iman?

Prophet Muhammad (Peace and blessings of Allah be upon him) said :

 Whoever possesses the following three qualities will have the sweetness (delight) of Iman:

1. The one to whom Allah and His Prophet becomes dearer than anything else.

2. Who loves a person and he loves him only for Allah's sake.

3. Who hates to revert to Atheism (disbelief) as he hates to be thrown into the fire. (Al-Bukhari)

Essential Criteria for Iman

Prophet Muhammad (Peace and blessings of Allah be upon him) said :

 None of you will have Iman till he loves me more than his father, his children and all mankind.(Al-Bukhari)

The Good Qualities of Islam

A man asked the Prophet (Peace and blessings of Allah be upon him), What qualities of Islam are good? The Prophet (Peace and blessings of Allah be upon him) replied: To feed the poor and greet those whom you know and those whom you do not know. (Al-Bukhari)

Haya is a part of Iman

Prophet Muhammad (Peace and Blessings of Allah be upon him) said :

 Iman consists of more than sixty branches (i.e. parts). And Haya (self respect, modesty) is a part of Iman. (Al-Bukhari)

The intensity of Hell fire

Prophet Muhammad (Peace and Blessings of Allah be upon him) said:

The fire of the children of Adam which they kindle is a seventieth part of the fire of Jahannam.

Companions(may Allah be pleased with them)said, Messenger of Allah, this fire is certainly enough.

He (Peace and Blessings of Allah be upon him) replied: Fire of Hell is sixty-nine times greater than the fire of this world.  (Malik Muwatta)

The worth of this world in the Sight of Allah.

Prophet Muhammad (peace and blessings be upon him) said :

 If the worth of this world in the sight of Allah was equal to the wings of a mosquito He would not have allowed an unbeliever even a single sip of water. (At-Tirmidhi)

Salah is not accepted for forty nights.

Prophet Muhammad (peace and blessings be upon him) said :

 Whoever goes to a fortune-teller to ask him something about the future, his Salah is not accepted for forty nights. (Muslim Shareef)

What is Jannah made of ?

Abu Hurairah (may Allah be pleased with him) asked Prophet Muhammad ( peace and blessings be upon him): What is Jannah made of?

 Prophet Muhammad (peace and blessings be upon him) replied:

 One brick of gold and one of silver. Its mortar is of musk with a strong smell and its stones are pearls and emeralds and its earth is of saffron. (At-Tirmidhi, Ahmad, Darimi)

Mildest Punishment in Hell

Prophet Muhammad (peace and blessings be upon him) said :

 The mildest punishment to be inflicted on a person in Hell is that he will be made to wear a pair of sandals made of fire which will be so hot that they will  make his brain boil as something boils on a stove. He will imagine that no one is undergoing a more severe punishment, though his punishment, in reality, will be the mildest in Hell. (Al-Bukhari , Muslim)

Life processes in Jannah

Prophet Muhammad (peace and blessings be upon him) said:

The dwellers of Jannah will eat and drink but no secretions will be formed in their mouths and nostrils and they will not have to empty their bowels and bladders.

 Some of the companions (may Allah be pleased with them) asked: What would happen to the food? Prophet Muhammad (peace and blessings be upon him) said:

 It will pass out by means of belching and perspiration that will smell like musk. (Muslim Shareef)

Rewards in Jannah

Prophet Muhammad (peace and blessings be upon him) said:

 Whoever enters Jannah will be in bliss and have all that he may need. He will live forever and never die. Neither his clothes will get old nor his youth will end. (At-Tirmidhi, Ahmad, Darimi)

Punishment in Hell

Prophet Muhammad (peace and blessings be upon him) said:

Amongst the people of Hell, there will be a few whom the fire will overtake upto their ankles, others whom the
fire will overtake upto their knees, others whom the fire will overtake upto their waists and others whom the fire
will overtake upto their throats. (Muslim Shareef)

Greatest Reward in Jannah

Prophet Muhammad (peace and blessings be upon him) said:

 Allah will ask the people of Jannah: O dwellers of Jannah,  are you well pleased now?
 They will reply: O our Rabb, why should we not be pleased, when You have given us that which You have not given to any of Your creatures? He would then say: May I not give you something more excellent than all that you have? They would then ask in amazement as to what it could be and Allah would say: I shall now bestow My everlasting pleasure upon you and shall never afterwards be displeased with you.  (Muslim Shareef)

Three occasions on the day of Judgement

Prophet Muhammad (peace and blessings be upon him) said:

 There are three occasions when no one will remember anyone else. First, when the scales of justice are set up to determine whether the weight of one's good deeds is heavier or lighter ; second, when the Books of Deeds are delivered until the time it is determined in which hand the Book of Deeds is delivered to a certain person, in his right hand, left hand or from behind . On receiving it in the right hand, one believer will joyously show it to others and say: read it ; and third, when the Bridge shall be placed over the bottomless pit of Hell and everyone will be commanded to walk over it. (Muslim Shareef)