From dust to dust, Muhammad was born, lived as a tyrant, then passed away, rotted and became dust. Did that stop the Koran from being revealed? No, of course not:
Narrated `Aisha:
Abu Bakr came from his house at As-Sunh on a horse. He dismounted and entered the Mosque, but did not speak to the people till he entered upon Aisha and went straight to Allah’s Messenger who was covered with Hibra cloth (i.e. a kind of Yemenite cloth). He then uncovered the Prophet’s face and bowed over him and kissed him and wept, saying, “Let my father and mother be sacrificed for you. By Allah, Allah will never cause you to die twice. As for the death which was written for you, has come upon you.”
Narrated IbnAbbas:
Abu Bakr went out while Umar bin Al-Khattab was talking to the people. Abu Bakr said, “Sit down, O Umar!”
But Umar refused to sit down.
So the people came to Abu Bakr and left Umar.
Abu Bakr said, “To proceed, if anyone amongst you used to worship Muhammad, then Muhammad is dead, but if (anyone of) you used to worship Allah, then Allah is Alive and shall never die. Allah said:–“Muhammad is no more than an Apostle, and indeed (many) apostles have passed away before him (till the end of the Verse) Allah will reward to those who are thankful.” (3.144)
By Allah, it was as if the people never knew that Allah had revealed this Verse before till Abu Bakr recited it and all the people received it from him, and I heard everybody reciting it (then).
Narrated Az-Zuhri:
Said bin Al-Musaiyab told me that Umar said, “By Allah, when I heard Abu Bakr reciting it, my legs could not support me and I fell down at the very moment of hearing him reciting it, declaring that the Prophet had died.”
Sahih al-Bukhari 4452, 4453, 4454
Muḥammad is not but a messenger.
[Other] messengers have passed on before him.
So if he was to die or be killed, would you turn back on your heels [to unbelief]?
And he who turns back on his heels will never harm Allāh at all; but Allāh will reward the grateful.
Koran 3:144
Muhammad is no more than an Apostle, and indeed (many) apostles have passed away before him
(till the end of the Verse 3:144)
Allah will reward to those who are thankful.
Abu Bakr said, 3:144
Notice that chapter 3 doesn’t end there, but continues:
And it is not [possible] for one to die except by permission of Allāh at a decree determined.
And whoever desires the reward of this world – We will give him thereof; and whoever desires the reward of the Hereafter – We will give him thereof.
And We will reward the grateful.
Koran 3:145
For more, read my refutation: Koran 3:144-148.
Chapter 3 continues and finally concludes with:
O you who have believed, persevere and endure and remain stationed and fear Allāh that you may be successful.
Koran 3:200
For more, read my refutation: Koran 3:199-200.
So the naive Muslim will have to admit that there’s at least 66 verses of the Koran were “revealed” after the death of Muhammad.
So, is chapter 3 the last chapter of the Koran? No, there are over 100+ chapters to go! Obviously, the Koran is out of order, and there are chapters and verses after Muhammad’s death.
Muhammad died, the Koran continued, showing it’s a creation of mere men, men who lived after Muhammad died, from poison, for being a liar:

The Koran is from men, Allah is an idol, and Islam is false.
