We were forbidden in the Holy Qur'an that we should ask about anything from the Messenger of Allah (ﷺ) and then Anas reported the hadith in similar words.
Sahih Muslim Book 1, Hadith 11
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We were forbidden that we should ask anything (without the genuine need) from the Holy Prophet. It, therefore, pleased us that an intelligent person from the dwellers of the desert should come and asked him (the Holy Prophet) and we should listen to it. A man from the dwellers of the desert came (to the Holy Prophet) and said: Muhammad, your messenger came to us and told us your assertion that verily Allah had sent you (as a prophet). He (the Holy Prophet) remarked: He told the truth. He (the bedouin) said: Who created the heaven? He (the Holy Prophet) replied: Allah. He (the bedouin again) said: Who created the earth? He (the Holy Prophet) replied: Allah. He (the bedouin again) said: Who raised these mountains and who created in them whatever is created there? He (the Holy Prophet) replied: Allah. Upon this he (the bedouin) remarked: By Him Who created the heaven and created the earth and raised mountains thereupon, has Allah (in fact) sent you? He (the Holy Prophet) said: Yes. He (the bedouin) said: Your messenger also told us that five prayers (had been made) obligatory for us during the day and the night. He (the Holy Prophet) remarked: He told you the truth. He (the bedouin) said: By Him Who sent you, is it Allah Who ordered you about this (i. e. prayers)? He (the Holy Prophet) said: Yes. He (the bedouin) said: Your messenger told us that Zakat had been made obligatory in our riches. He (the Holy Prophet) said. He has told the truth. He (the bedouin) said: By Him Who sent you (as a prophet), is it Allah Who ordered you about it (Zakat)? He (the Holy Prophet) said: Yes. He (the bedouin) said: Your messenger told us that it had been made obligatory for us to fast every year during the month of Ramadan. He (the Holy Prophet) said: He has told the truth. He (the bedouin) said: By Him Who sent you (as a prophet), is it Allah Who ordered you about it (the fasts of Ramadan)? He (the Holy Prophet) said: Yes. He (the bedouin) said: Your messenger also told us that pilgrimage (Hajj) to the House (of Ka'bah) had been made obligatory for him who is able to undertake the journey to it. He (the Holy Prophet) said: Yes. The narrator said that he (the bedouin) set off (at the conclusion of this answer, but at the time of his departure) remarked: 'By Him Who sent you with the Truth, I would neither make any addition to them nor would I diminish anything out of them. Upon this the Prophet remarked: If he were true (to what he said) he must enter Paradise.
Sahih Muslim Book 1, Hadith 10 Next Hadith → The Prophet (ﷺ) stopped for a while and cast a glance upon his companions and then said: He was afforded a good opportunity (or he had been guided well). He (the Holy Prophet) addressing the bedouin said: (Repeat) whatever you have uttered. He (the bedouin) repeated that. Upon this the Apostle (ﷺ) remarked: The deed which can draw you near to Paradise and take you away from Hell is, that you worship Allah and associate none with Him, and you establish prayer and pay Zakat, and do good to your kin. After having uttered these words, the Prophet asked the bedouin to release the nosestring of his she-camel.
Sahih Muslim Book 1, Hadith 12
Sahih Muslim Book 1, Hadith 10 Next Hadith → The Prophet (ﷺ) stopped for a while and cast a glance upon his companions and then said: He was afforded a good opportunity (or he had been guided well). He (the Holy Prophet) addressing the bedouin said: (Repeat) whatever you have uttered. He (the bedouin) repeated that. Upon this the Apostle (ﷺ) remarked: The deed which can draw you near to Paradise and take you away from Hell is, that you worship Allah and associate none with Him, and you establish prayer and pay Zakat, and do good to your kin. After having uttered these words, the Prophet asked the bedouin to release the nosestring of his she-camel.
Sahih Muslim Book 1, Hadith 12