Verily the Messenger of Allah said: The last to enter Paradise would be a man who would walk once and stumble once and be burnt by the Fire once. Then when he gets beyond it, he will turn to it and say: Blessed is He Who has saved me from thee. Allah has given me something He has not given to any one of those in earlier or later times. Then a tree would be raised up for him and he will say: O my Lord I bring me near this tree so that I may take shelter in its shade and drink of its water. Allah, the Exalted and Great, would say: O son of Adam, if I grant you this, you will ask Me for something else. He would say: No. my Lord. And he would promise Him that he would not ask for anything else. His Lord would excuse him because He sees what he cannot help desiring; so He would bring him near it, and he would take shelter in its shade and drink of its water. Afterwards a tree more beautiful than the first would be raised up before him and he would say: O my Lord! bring me near this tree in order that I may drink of its water and take shelter in its shade and I shall not ask Thee for anything else. He (Allah) would say: O son of Adam, if I bring you near it you may ask me for something else. He would promise Him that he would not ask for anything else. His Lord will excuse him because He would see something he cannot help desiring. So He would bring him near it and he would enjoy its shade and drink its water. Then a tree would be raised up for him at the gate of the Paradise, more beautiful than the first two. He would say: O my Lord! bring me near this (tree) so that I may enjoy its shade and drink from its water. I shall not ask Thee for anything else. He (Allah) would say: O son of Adam! did you not promise Me that you would not ask Me anything else? He would say: Yes, my Lord, but I shall not ask Thee for anything else. His Lord would excuse him for He sees something the temptation of which he could not resist. He (Allah) would bring him near to it, and when He would bring him near it he would hear the voices of the inhabitants of the Paradise. He would say: O my Lord! admit me to it. He (Allah) would say: O son of Adam, what will bring an end to your requests to Me? Will it please you if I give you the whole world and a like one along with it? He will say: O my Lord! art Thou mocking at me, though Thou art the Lord of the worlds? Ibn Mas'ud laughed and asked (the hearers): Why don't you ask me what I am laughing at. They (then) said: Why do you laugh? He said: It is in this way that the Messenger of Allah (ﷺ) laughed. They (the companions of the Holy Prophet) asked: Why do you laugh. Messenger of Allah? He said: On account of the laugh of the Lord of the universe, when he ldesirer of Paradise) sai Thou mocking at me though Thou art the Lord of the worlds? He would say: I am not mocking at you, but I have power to do whatever I will.
Sahih Muslim Book 1, Hadith 368
Allah's Messenger (ﷺ) addressed us and said: O people, Allah has made Hajj obligatory for you; so perform Hajj. Thereupon a person said: Messenger of Allah, (is it to be performed) every year? He (the Holy Prophet) kept quiet, and he repeated (these words) thrice, whereupon Allah's Messenger (ﷺ) said: If I were to say" Yes," it would become obligatory (for you to perform it every year) and you would not be able to do it. Then he said: Leave me with what I have left to you, for those who were before you were desroyed because of excessive questioning, and their opposition to their apostles. So when I command you to do anything, do it as much as it lies in your power and when I forbid you to do anything, then abandon it.
Sahih Muslim Book 15, Hadith 461
One of `Abdullah's sons said to `Abdullah (bin `Umar) "I wish you would stay this year (and not
perform Hajj) as I am afraid that you will not be able to reach the Ka`ba." On that he (i.e. `Abdullah
bin `Umar) said, "We went out with the Prophet (for `Umra), and when the Quraish infidel intervened
between us and the Ka`ba, the Prophet (ﷺ) slaughtered his Hadi and shaved (his head), and his
companions cut short their hair." Then `Abdullah bin `Umar said, "I make you witness that I have
intended to perform `Umra and if I am allowed to reach the Ka`ba, I will perform the Tawaf, and if
something (i.e. obstacles) intervene between me and the Ka`ba, then I will do what Allah's Messenger (ﷺ)
did." Then after going for a while, he said, "I consider the ceremonies (of both `Umra and Hajj as one
and the same, so I would like you to witness that I have intended to perform Hajj along with my
`Umra." So he performed only one Tawaf and one Sai (between Safa and Marwa) and finished the
Ihram of both Umra and Hajj).
Sahih al-Bukhari Book 64, Hadith 225
Yahya related to me from Malik from Sumayy, the mawla of Abu Bakr
ibn Abd ar-Rahman, from Abu Salih as-Sammani from Abu Hurayra that the
Messenger of Allah, may Allah bless him and grant him peace, said, "If
someone does ghusl for major ritual impurity on the day of jumua and
then goes in the first part of the time, it is as if he had offered up
a camel. If he goes in the second part of the time, it is as if he had
offered up a cow. If he goes in the third part of the time, it is as
if he had offered up a horned ram. If he goes in the fourth part of
the time, it is as if he had offered up a hen. If he goes in the fifth
part of the time, it is as if he had offered up an egg. And when the
imam comes out, the angels settle down listening to the dhikr
(remembrance of Allah)."
Muwatta Malik Book 5, Hadith 1