"When the Messenger of Allah (ﷺ) died, some of the 'Arabs apostatized. 'Umar said: 'O Abu Bakr, how can you fight the 'Arabs? Abu Bakr said: 'The Messenger of Allah (ﷺ) said: I have been commanded to fight the people until they testify that La ilaha illallah (there is none worthy of worship except Allah) and that I am the Messenger of Allah, and establish prayer and pay Zakah?' By Allah, if they withhold from me a small she-goat that they used to give to the Messenger of Allah (ﷺ) I will fight them for withholding it.' ('Umar siad) 'By Allah, when I realized that (Abu) Bakr was confident about this idea, then I knew that this was teh truth.'"
Abu 'Abdur-Rahman (An-Nasa'i) said: 'Imran Al Qattan is not strong in Hadith, and this narration is a mistake. The one that is before it is the correct narration of Az-Zuhri, from 'Ubaidullah bin 'Abdullah bin 'Utbah, from Abu Hurairah.
Sunan an-Nasa'i Book 25, Hadith 10
A Bedouin came to the Prophet (ﷺ) and said, "Tell me of such a deed as will make me enter Paradise, if I
do it." The Prophet (p.b.u.h) said, "Worship Allah, and worship none along with Him, offer the (five)
prescribed compulsory prayers perfectly, pay the compulsory Zakat, and fast the month of Ramadan."
The Bedouin said, "By Him, in Whose Hands my life is, I will not do more than this." When he (the
Bedouin) left, the Prophet (ﷺ) said, "Whoever likes to see a man of Paradise, then he may look at this
man."
Narrated Abu Zur'a:
From the Prophet (ﷺ) the same as above.
Sahih al-Bukhari Book 24, Hadith 3
"I was hiding beneath the covering of the Ka'bah, and three men came along - a man from the Quraish, and two of his brothers-in-law from Thaqif, or a man from Thaqif and two of his brothers-in-law from Quraish. Their bellies were fat, and they did not have much understanding. They said something that I could not understand, then one of them said: 'Do you think that Allah can hear what we are talking about?' Another said: 'If we raise our voices, He will hear it, but if we do not raise our voices, He will not hear it.' The other one said: 'If He can hear something from us, then He can hear all of it.'" 'Abdullah said: "I mentioned that to the Prophet (ﷺ), so Allah revealed: 'And you have not been hiding yourselves, lest your ears and your eyes and your skin should testify against you...' up to His saying: '...and you have become of those utterly lost! (42:22 & 23)"
Jami` at-Tirmidhi Book 47, Hadith 301