Muawiyah bin Qurrah narrates from his father that the Prophet Muhammad (peace be upon him) said:
“A group from my Ummah will always be helped, and whoever tries to disgrace them, his attempt will not harm them in any way. This will continue until the Day of Resurrection.”
(That is, they will continue to be helped until the Day of Resurrection.)

Sayyiduna Abdullah bin Abbas (may Allah be pleased with him) narrates this statement of the Noble Prophet (peace and blessings of Allah be upon him):

"You people hear (ahadith) from me (in the coming times these ahadith will be heard from you) and then they will be heard from those who heard them from you."

The narrator named Abdullah bin Abdullah Razi is trustworthy, and he is a resident of Kufa.

Sayyiduna Abu Humayd (may Allah be pleased with him) and Sayyiduna Abu Usaid (may Allah be pleased with him) narrate this statement of the Prophet Muhammad (peace and blessings be upon him):

“When you hear something attributed to me that your mind accepts, and your hair and skin become soft for it, and you feel that this matter is close to you, then I am most entitled to that statement among you. And when you hear something attributed to me that your mind rejects, and your hair and skin feel aversion to it, and you feel that you are distant from it, then I am the most distant from that statement among you.”

Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him) narrates: The Prophet Muhammad (peace and blessings be upon him) said:
"Only record the Qur'an from me. Whoever has recorded anything from me other than that, let him erase it."
(Imam Ibn Hibban, may Allah have mercy on him, says:) The Prophet Muhammad's (peace and blessings be upon him) prohibition of recording anything other than the Qur'an means: He (peace and blessings be upon him) encouraged the memorization of hadiths, lest people record the hadiths and then not memorize them or reflect upon them.
The evidence for the correctness of this position is that the Prophet Muhammad (peace and blessings be upon him) allowed Sayyiduna Abu Shah Yamani to record the sermon of the Farewell Pilgrimage, which he had heard from the Prophet Muhammad (peace and blessings be upon him) himself.
Similarly, the Prophet Muhammad (peace and blessings be upon him) also allowed Sayyiduna Abdullah bin Amr (may Allah be pleased with him) to record hadiths.

Sayyiduna Abu Dharr Ghifari (may Allah be pleased with him) narrates:
“When the Prophet Muhammad (peace and blessings be upon him) departed from us, there was not even a bird flying with its wings except that we had some knowledge about it.”
(Imam Ibn Hibban, may Allah have mercy on him, says:) The meaning of the words in the narration“we had some knowledge about it”is that regarding the commands, prohibitions, information, actions, and declarations of permissibility by the Prophet Muhammad (peace and blessings be upon him), (we had received knowledge).

Sayyiduna Abdullah bin Mas’ud (may Allah be pleased with him) narrates: The Noble Prophet (peace and blessings be upon him) said:
“May Allah keep that person happy who hears something from us and then conveys it exactly as he heard it, because sometimes the one to whom it is conveyed understands it better than the one who heard it directly.”

Abdur Rahman bin Aban (from his father, who is the son of Sayyiduna Uthman Ghani, may Allah be pleased with him) narrates: Once, Sayyiduna Zaid bin Thabit, may Allah be pleased with him, came out from Marwan at midday, so I thought that Marwan must have called him at this time to ask him about something.

I came to Sayyiduna Zaid, may Allah be pleased with him, and inquired from him about this. He said: That is so. He had asked us about some things which we had heard from the Prophet Muhammad, peace and blessings be upon him.

(The Prophet Muhammad, peace and blessings be upon him, said:)

“May Allah have mercy on the person who hears something from me and preserves it until he conveys it to another. For sometimes the one who hears a matter of fiqh (religious knowledge) conveys it to someone who has more understanding of religion than he does.”Sometimes the one who acquires knowledge of a religious matter is not himself a scholar.

There are three qualities regarding which the heart of a Muslim does not betray:

Making deeds sincere for Allah Almighty, having goodwill for the rulers, and staying with the (Muslim) community. For the supplication of these people reaches even those who are absent.

Abdur Rahman bin Abdullah narrates from his father, Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him), that the Prophet Muhammad (peace and blessings be upon him) said:
"May Allah have mercy on the person who hears something from me and then conveys it to others just as he heard it, because sometimes the one to whom it is conveyed preserves it better than the one who heard it directly."

Abdur Rahman bin Abdullah bin Mas’ud narrates from his father: I heard the Prophet Muhammad (peace be upon him) say:
“May Allah keep that person happy who hears something from us and conveys it as he heard it, for sometimes the one to whom it is conveyed understands it better than the one who heard it directly.”

Sayyiduna Abdullah bin Umar (may Allah be pleased with him) narrates: The Noble Prophet (peace and blessings be upon him) said:
“The keys of the unseen are five. No one except Allah knows what the wombs will bring forth (i.e., whether a boy will be born or a girl will be born), and no one except Allah knows what will happen tomorrow.
No one except Allah knows when it will rain. And no person knows on which land he will die. And no person knows when the Hour (Day of Judgment) will be established.”