How big will the believer’s dominion be in Paradise? What deeds could increase the size of his dominion?
Question

                How big will the believer’s dominion be in Paradise? Is there any evidence which mentions the size of his dominion? What are the deeds that could increase the size of the dominion of the believer in Paradise?
Praise be to Allah.
    
    Allah, may He be exalted, has prepared Paradise for His pious 
    slaves and has made its breadth like the breadth of heaven and earth, which 
    is indicative of its vastness and great size. Allah, may He be exalted, will 
    honour His slaves therein by His grace and mercy, and His grace is immense 
    and His mercy is vast. Part of that honour is the great dominion that the 
    people of Paradise will have. Allah, may He be exalted, says, describing 
    that (interpretation of the meaning): “And when you look there (in 
    Paradise), you will see a delight (that cannot be imagined), and a great 
    dominion” [al-Insaan 76:20]. 

    
    In the saheeh Sunnah there is a description of the abundance 
    that the lowest of the people of Paradise in status will have, which is ten 
    times this world! So how about the highest of them in status? It was 
    narrated from ‘Abdullah ibn Mas‘ood (may Allah be pleased with him) that the 
    Prophet (blessings and peace of Allah be upon him) said: “I know the last of 
    the people of Hell to be brought forth, and the last of the people of 
    Paradise to enter therein. It will be a man who will emerge crawling from 
    Hell, and Allah will say to him: ‘Go and enter Paradise.’ He will come to it 
    and it will appear to him to be full. He will go back and say, ‘O Lord, I 
    found it full.’  Allah, may He be blessed and exalted, will say to him: ‘Go 
    and enter Paradise.’ He will go to it and it will appear to him to be full. 
    He will go back and say, ‘O Lord, I found it full.’ Allah, may He be blessed 
    and exalted, will say to him: ‘Go and enter Paradise, and you will have the 
    equivalent of the whole world and ten times as much.’ He will say, ‘Are You 
    mocking me – or laughing at me – when You are the Sovereign?’” He said: And 
    I saw the Messenger of Allah (blessings and peace of Allah be upon him) 
    smile so broadly that his molars appeared. And he used to say: “That will be 
    the lowest of the people of Paradise in status.”

    
    Narrated by al-Bukhaari (6202); Muslim (186). 

    
    With regard to deeds and acts of obedience that the Muslim 
    can do to increase the size of his dominion in Paradise, we do not know of 
    anything proven in the Sunnah. But undoubtedly if the Muslim has a space in 
    Paradise the size of a whip or the size of a bow, that will be better for 
    him than this world and everything in it, as is narrated in a saheeh report 
    from the Prophet (blessings and peace of Allah be upon him). It was narrated 
    that Sahl ibn Sa‘d as-Saa‘idi said: The Messenger of Allah (blessings and 
    peace of Allah be upon him) said: “The space of the whip of one of you in 
    Paradise is better than this world and everything in it.” Narrated by al-Bukhaari 
    (2735). And it was narrated from Abu Hurayrah (may Allah be pleased with 
    him) that the Prophet (blessings and peace of Allah be upon him) said: “The 
    short span of the bow of one of you in Paradise is better than that on which 
    the sun rises or sets.” Narrated by al-Bukhaari (2643). 

    
    The “short span” of a bow is the area between the middle 
    (where the archer grasps it) and the end of the bow. What is meant is that 
    the space of that size in Paradise is better than this world and everything 
    in it. And the same is said concerning the space of a whip. 

    
    It is proven in the saheeh Sunnah that the tent of the 
    believer in Paradise will be sixty miles long, so how big will the size of 
    his dominion be if that is the length of just one tent? It was narrated from 
    Abu Moosa al-Ash‘ari (may Allah be pleased with him) that the Prophet 
    (blessings and peace of Allah be upon him) said: “In Paradise the believer 
    will have a tent made from a single hollowed-out pearl, sixty miles long, in 
    which the believer will have wives and he will go around among them and they 
    will not see one another.”

    
    Narrated by al-Bukhaari (4598) and Muslim (2838); according 
    to another version it is “sixty miles wide”. 

    
    And Allah knows best.