Describing the width of Jannah, Allah Says in the Quran: And hasten to forgiveness from your Lord and a garden as wide as the heavens and earth, prepared for the righteous

At another place in the Quran giving a general description of paradise Allah says: And no soul knows what has been hidden for them of comfort for eyes as reward for what they used to do.

The prophet صلى الله عليه وسلم said regarding paradise: Allah said: I have prepared for My righteous servants what no eye has seen and no ear has heard, nor has it occurred to human heart.

There are many ranks and various ways of how each will be blessed with a paradise in their own way, thus a narration is reported:  on the authority of al-Mughira b. Shu’ba that the Messenger of Allah (ﷺ) said:

Moses asked his Lord: Who amongst the inhabitants of Paradise is the lowest to rank? He (Allah) said: The person who would be admitted into Paradise last of all among those deserving of Paradise who are admitted to it. it would be said to him: Enter Paradise. He would say: O my Lord! how (should I enter) while the people have settled in their apartments and taken the shares (portions)? It would be said to him: Would you be pleased if there be for you like the kingdom of a king amongst the kings of the world? He would say: I am pleased my Lord. He (Allah) would say: For you is that, and like that, and like that, and like that, and that. He would say at the fifth (point): I am well pleased. My Lord. He (Allah) would say: It is for you and ten times like it.

At another place Rasulullah صلى الله عليه وسل ‘s narration by Abu Sa’id and Abu Hurairah (May Allah be pleased with them) reported:

The Messenger of Allah (ﷺ) said, “When the dwellers of Jannah enter Jannah, an announcer will call: (You have a promise from Allah that) you will live therein and you will never die; you will stay healthy therein and you will never fall ill; you will stay young and you will never become old; you will be under a constant bliss and you will never feel miserable.”

Among all the blessings a dweller of paradise will receive, there is one that is the greatest achievement for a believer and they have been promised this reward if Allah enters them into it. Jarir Narrates that: We were sitting with the Prophet (ﷺ) and he looked at the moon on the night of the full-moon and said, “You people will see your Lord as you see this full moon, and you will have no trouble in seeing Him, so if you can avoid missing (through sleep or business, etc.) a prayer before sunrise (Fajr) and a prayer before sunset (`Asr) you must do so.”