Some angels came to the Prophet (ﷺ) while he was sleeping. Some of them said, "He is sleeping." Others
said, "His eyes are sleeping but his heart is awake." Then they said, "There is an example for this
companion of yours." One of them said, "Then set forth an example for him." Some of them said, "He
is sleeping." The others said, "His eyes are sleeping but his heart is awake." Then they said, "His
example is that of a man who has built a house and then offered therein a banquet and sent an inviter
(messenger) to invite the people. So whoever accepted the invitation of the inviter, entered the house
and ate of the banquet, and whoever did not accept the invitation of the inviter, did not enter the
house, nor did he eat of the banquet." Then the angels said, "Interpret this example to him so that he
may understand it." Some of them said, "He is sleeping.'' The others said, "His eyes are sleeping but
his heart is awake." And then they said, "The houses stands for Paradise and the call maker is
Muhammad; and whoever obeys Muhammad, obeys Allah; and whoever disobeys Muhammad,
disobeys Allah. Muhammad separated the people (i.e., through his message, the good is distinguished
from the bad, and the believers from the disbelievers).
Sahih al-Bukhari Book 96, Hadith 13
A bedouin gave the Pledge of allegiance for embracing Islam to Allah's Messenger (ﷺ), and then he got an attack of fever in Medina and came to Allah's Messenger (ﷺ): and said, "O Allah's Messenger (ﷺ)! Cancel my pledge." Allah's Messenger (ﷺ) refused to do so. The bedouin came to him again and said, "Cancel my pledge," but he refused again, and then again, the bedouin came to him and said, "Cancel my pledge," and Allah's Messenger (ﷺ) refused. The bedouin finally went away, and Allah's Messenger (ﷺ) said, "Medina is like a pair of bellows (furnace), it expels its impurities while it brightens and clears its good.'
Sahih al-Bukhari Book 96, Hadith 52
The People of Kufa complained against Sa`d to `Umar and the latter dismissed him and appointed
`Ammar as their chief . They lodged many complaints against Sa`d and even they alleged that he did
not pray properly. `Umar sent for him and said, "O Aba 'Is-haq! These people claim that you do not
pray properly." Abu 'Is-haq said, "By Allah, I used to pray with them a prayer similar to that of Allah's
Apostle and I never reduced anything of it. I used to prolong the first two rak`at of `Isha prayer and
shorten the last two rak`at." `Umar said, "O Aba 'Is-haq, this was what I thought about you." And then
he sent one or more persons with him to Kufa so as to ask the people about him. So they went there
and did not leave any mosque without asking about him. All the people praised him till they came to
the mosque of the tribe of Bani `Abs; one of the men called Usama bin Qatada with a surname of Aba
Sa`da stood up and said, "As you have put us under an oath; I am bound to tell you that Sa`d never
went himself with the army and never distributed (the war booty) equally and never did justice in legal
verdicts." (On hearing it) Sa`d said, "I pray to Allah for three things: O Allah! If this slave of yours is
a liar and got up for showing off, give him a long life, increase his poverty and put him to trials." (And
so it happened). Later on when that person was asked how he was, he used to reply that he was an old
man in trial as the result of Sa`d's curse. `Abdul Malik, the sub narrator, said that he had seen him
afterwards and his eyebrows were overhanging his eyes owing to old age and he used to tease and
assault the small girls in the way.
Sahih al-Bukhari Book 10, Hadith 149