Refusing A Date Palm Tree in Paradise

Marhum Allama Shaykh Tabarsi is quoted from his Tafseer ‘Majma 'al-Bayaan’ about the revelation of the 92nd Surah of Holy Qur’an ‘al-Layl:

A branch of the date palm tree of one of the Muslims reached the house of a poor man. When the palmist climbed the date palm tree to take off the dates, sometimes some of the dates would drop in the house of this poor man and his children would pick them up. The man would come down from the tree and snatch the dates from them, many times if he saw a date in the mouth of any of the children, he would put his finger in their mouth and bring it out. 
The poor man complained to the Prophet of Islam (s.a.w.a): The Prophet (s.a.w.a) said: You go home, I will solve this problem for you. Holy Prophet (s.a.w.a ) went to the owner of the tree and offered him to give it to him so that he can give it a tree in the heaven. 
To this the owner replied,"I have a lot of date palm trees, but no one's dates are as good as this tree (so I'm not ready to make this deal)." One of the companions of the Prophet (s.a.w.a) heard this conversation. He said: O Messenger of Allah, if I go and buy this tree from this person, will you give me what you were giving to him? 
Prophet (s.a.w.a) replied: Yes! 
The man went and met the owner of the tree and talked to him about it. The owner of the date palm tree said: “Do you know that Muhammad (peace be upon him) gave me a palm tree in Paradise in return? But I did not accept. I told them that I enjoy its dates very much, I have a lot of date palm trees but no one's dates are so good.”
The buyer asked if he wanted to sell or not. He said: I will not sell it, but only if you give me so much that no one will. He asked: How much do you want for it? He said forty trees.
The buyer said in astonishment: So you ask for a very high price for a date palm tree that has become crooked. Forty date palm trees!
Then after a short silence he said: Very well, I will give you forty date palm trees.
The seller (greedy) said, "If you are telling the truth, call some men to testify." Incidentally, some people were passing by. He called them and made them witnesses in the matter.
Then he came to the service of the Prophet (s.a.w.a) and said: O Messenger of Allaah! That date palm tree has come into my possession, and I present it to you.
The Prophet (s.a.w.a) went to the family of the poor man and said to the owner of the house: “Now, this date palm tree belongs to you and your children.”

THE PROPHET OF ISLAM WAS THE FIRST TO TESTIFY TO THE LORDSHIP OF ALLAH

Muhammad b. Yahya reports from Ahmad b. Muhammad from al-Hasan b. Mahbub from Salih b. Sahl from Abi 'Abd Allah (the 6th Imam) (as)-
That a group of Quraysh said to the Messenger of Allah (sa)
"Through what merit do you precede the prophets while you were sent as the last of them and as their seal?"
So he said-
"I was the foremost in bringing faith in my Lord and the first to respond as Allah extracted the testimony of the prophets and [as he] made them witnesses upon their souls, saying 'am I not your Lord?' I was the first prophet to say yes [o Lord]. Thus I  preceded them all in giving testimony to Allah"

Imam Musa al-Kadhim (a.s.) & Mansur

One Nawroz day, Mansur Dawaaniqi, the Abbasid Caliph who took over the caliphate after his brother Abu al-A’bbas Saffaah, ordered Imam Musa Kadhim (a.s.) to present himself in the gathering of the Eid of Nawroz. This was so that the people could come and greet him and offer their gifts to him, which he should accept.
The Imam (a.s.) told Mansur, “Nawroz is the customary Eid of the Iranians and nothing has been said about it in Islam.”
To which Mansur replied, “This act is politically motivated and is intended to keep my soldiers happy. I place you under the oath of the Great God that you accept my request and present yourself at that gathering.”
The Imam (a.s.) agreed and arrived at the assembly. The army generals, nobles and the common masses arrived in his august presence, greeted him, and presented their gifts to him.
In the meantime, Mansur had ordered one of his slaves to position himself near the Imam (a.s.) and maintain a record of the money and gifts presented to him. The last person who had come to meet the Imam (a.s.) was an old man, who said to him:
“O’ Son of the Messenger of Allah! I am an impoverished person and lack the money to present you with gifts, but my gift for you today are three verses of elegy, which my grandfather had composed for your grandfather, Husain Ibn A'li(a.s.).”
Having said this, he then recited the verses.
The Imam (a.s.) responded appreciatively, saying, “I have accepted your gift,” after which he prayed for the man.
Then, turning to the slave, he instructed, “Go to Mansur, inform him of these gifts and ask him what has to be done about them?”
The slave did as he was told and upon returning, said to the Imam (a.s.):
“The Caliph has said: I have given them to you (Imam Musa Kadhim) as gifts. Spend them as you desire.”
The Imam (a.s.) told the old man, “Take these riches and gifts, for I am giving them all to you as gifts.”