1400 Years have passed and nobody has been able to change a single letter or Produce its imitation.
The splitting of the moon: Narrated Anas (ra) that the makkans requested Prophet Muhammad (saw) to show them a miracle, so he showed them the splitting of the moon.
The Crying of the stem of the date palm tree in the Prophet's Mosque: Narrated Ibn Umar (ra) that the Prophet (saw) used to deliver his khutba whle leaning against a trunk of a date palm tree. When he had the pulpit made and used it instead, the trunk started crying and the Prophet (saw) went to it, rubbing his hand over it to stop its crying.
The flowing of the water from among the fingers of the Prophet (saw):
Narrated Jabir Ibn Abdullah (ra): I was with the Prophet (saw) and the time for the Asr prayer became due. We had no water with us except a little which was put in a vessel and was brought to the Prophet (saw). He put his hand into it and spread out his fingers and then said, Come along! Hurry Up! All those whose who want to perform ablution. The blessing is from Allah. I saw the water gushing out from his fingers. So the people performed the ablution and drank, and I tried to drink more of that water, for I knew that it was a blessing.
The Subnarrator said: I asked Jabir, "How many persons were you then?" He replied, "We were One thousand four hundred men."
The Prophet's (saw) meals used to glorify Allah while he ate, and this glorification was heard by the companions of the Prophet (saw).
Stones Used to greet Prophet (saw) when he passed by through the lanes of Makkah.
The Screening (shading) by the trees, for the Prophet (saw) to answer the call of nature.
The rising of water in the well at Hudaibiya after it had dried.
The increase of amount of dates in the garden of Jabir bin Abdullah after the Prophet (saw) went round the heaps of dates and invoked Allah for his blessings.
The Mi'raj: The Ascent of the Prophet (saw) to the heavens.
Speaking of the wolf:
Narrarted Abi Saeed Al-Khudri (ra): (While a shepherd was among his sheep) suddenly a wolf attacked a sheep and took it sway. The shepherd chased the wolf and took back the sheep. The wolf sat on its tail and addressed the shepherd saying: "Be afraid of Allah, you have taken the provision from me which Allah gave me. The shepherd said: What an amazing thing! A wolf sitting on its tail speaks to me in the language of a human being." The wolf said: "Shall I tell you something more amazing than this? There is Muhammad (saw) in Yatrib (Al-Madinah) informing the people about the news of the past. Then the shepherd proceeded driving his sheep till he entered Al Madinah, cornered his sheep to one side and came to Prophet (saw) and informed the whole story. Prophet (saw) ordered for the proclamation of a congregational prayer, then he (saw) came out and asked the shepherd to inform the people about his story and he informed them. Then Allah's Messenger (saw) said: The shepherd has spoken the truth. By him (Allah) in Whose hands my soul is, the Day of Resurrection will not be established till beasts of prey speak to the human beings, and the stick lash and the shoe-laces of a person speak to him and his thigh informs him about his family as to what happened to them after him.
The throwing out of a dead body of a Christian by the earth: Narrated Anas (ra): There was a Christian who embraced Islam and read Surat Al Baqarah and Al Imran and he used to write the revelation for the Prophet (saw). Later on he reverted to Christianity and used to say, " Muhammad (saw) knows nothing but I have written for him." Then Allah caused him to die and the people buried him but in the morning they found that the earth had thrown out his body. They said, "This is the deed of Muhammad (saw) and his companions. They have opened the grave of our companion and took his body out because he ran away from them," so they again dug the grave deeper for him, but in the morning they again found that the earth had throwned he body out. They said, "This is a deed of Muhammad (saw) and his companions," So they dug a third grave for him as deep as they could, but in the morning they found that the earth had thrown the body out. Then they believed what had befallen him, was not done by mankind, and they had to leave the body on the ground.
Source: Sahi Al-Bukhari
