It is those who believe not in the Signs of Allah that forge falsehood: it is they who lie!
(The Holy Quran, An-Nahl 16:105)

Khatmay-Nabuwat in the Quran

Close to one hundred verses of the holy Quran, directly or indirectly, support the doctrine of the Finality of Prophethood.

O people! Muhammad has no sons among ye men, but verily, he is the Apostle of God and the last in the line of Prophets. And God is Aware of everything.

Muhammad is not the father of any of your men, but (he is) the Messenger of Allah, and the Seal of the Prophets: and Allah has full knowledge of all things.
(The Holy Quran, Al-Ahzab 33:40)

This day have I perfected your religion for you, completed my favor upon you and have chosen for you Islam as your religion.
(The Holy Quran, Al-Maidah 5:3)

Khatmay-Nabuwat in Hadith of Prophet(SAW)

I am like unto that one missing brick and I am the last in the line of the Prophets.
(Bukhari, Muslim,Tirmidhi, Musnad Ahmad, Tirmizi, Babu Khatimin-Nabiyyin, Musnad Abu Dawud Tayalisi)

God has bestowed upon me six favors which the former Prophets did not enjoy:

• I have been endowed with the gift of pithy and perfect speech.

• I was granted victory owing to my awe.

• The spoils of war were made lawful unto me.

• The whole earth has been made the place of worship for me and it has become the means of purification for me also. In other words, in my religion, offering of prayers is not confined to certain specified places of worship. Prayers can be offered at any place over the earth. And in case water is not available, it is lawful for my people to perform ablutions with earth (Tayammum) and to cleanse themselves with the soil, if water for bathing is scarce.

• I have been sent by Allah to carry His Divine message to the whole world.

• And the line of prophets has come to its final end in me.
(Muslim, Tirmidhi, Ibn Majah)

I am Muhammad, I am Ahmad, I am the effacer and infidelity shall be erased through me; I am the assembler. People shall be assembled on Doomsday after my time. And I am the last in the sense that no prophet shall succeed me.
(Bukhari, Muslim, Tirmidhi, Muatta')

You (Hazrat Ali) are related to me as Aaron was related to Moses (pbuh). But no Apostle will come after me.
(Bukhari, Muslim
Musnad recorded a similar hadith ending in 'Behold there is no prophethood after me.')

If ever there arose a person from among my people who would hold communion with God, it would be none else but 'Umar bin Khattab.
(Bukhari , Muslim, Tirmidhi)

We are the last (ummah) but will precede all on the Day of Resurrection except that the Book was given to them before us.
(Bukhari, Muslim)

The tribe of Israel was guided by prophets. When a prophet passed away, another prophet succeeded him. But no prophet will come after me; only caliphs will succeed me.
(Bukhari)

I am the last in line of the prophets of God and my Masjid is the last Masjid.
(Muslim)