(Ahsaab) 33 : 40
مَا كَانَ مُحَمَّدٌ أَبَا أَحَدٍ مِنْ رِجَالِكُمْ وَلَٰكِنْ رَسُولَ اللَّهِ وَخَاتَمَ النَّبِيِّينَ ۗ وَكَانَ اللَّهُ بِكُلِّ شَيْءٍ عَلِيمًا

Muhammed is not a father of any one of your men, but he is the Messenger of the Lord and the seal of all Prophets, and Allah is the knower of each and everything.

Even though Messenger Muhammed had three sons and four daughters, Allah took back three sons into Paradise before they became mature. Since Zaid son of Haris was the adopted son, he can’t be considered as his son as told in verse 33: 4. That is why it is told in verse ‘Muhammed is not a father of any one of your men’. Being the reply to the argument that ‘is it enough to say that it is allowed to marry the wife of the adopted son when their wedlock is separated, and what is the need of marrying Zainab-the wife of the adopted son-violating all customs existed in the society for a long period?’ it is told in verse that Muhammed is the Messenger of Lord and seal to all Prophets. That means since Muhammed is the last Messenger and the last Prophet; he has to witness the dos and don’ts of the Lord’s Book-Adhikr- among mankind. From the first Messenger Nooh till the last Messenger Muhammed 313 Messengers were deputed by the Lord, and all Books revealed to them was Adhikr, even though the bodies of the Books were different as explained in verses 2: 2 and 4: 163. Including the Messengers, more than 124000 Prophets were also deputed by the Lord. All Messengers were given the Message Adhikr, but Prophets were not given Adhikr, instead, they were following the Message given to Messengers. That is the difference between a Messenger and a Prophet. All Messengers are Prophets, but all Prophets are not Messengers. Since it is told in this verse that Muhammed is the seal of all Prophets, there is no Messenger or Prophet to come from the Lord after Muhammed as explained in verse 7: 35. Revelation of all the dos and don’ts of the Lord’s Book should be completed by the period of Messenger Muhammed itself and there should be no need to come to any Messenger or Prophet thereafter. See explanation 2: 213; 7: 157-158. As taught by Lord through His Messenger, from the first pseudo Prophet Musailimathul Kaddab who came during the period of Messenger Muhammed itself up to the last pseudo Antichrist-Masseh Addajjal-there will appear 30 pseudo Prophets. At first, Antichrist will claim that he is the Prophet, and later he will claim that he is the lord. It is taught through Messenger that there will not be any sedition to Adam's children than that of the Antichrist. Jesus who was raised to second heaven will be brought to earth again being the ten crucial signs of the Last Day as explained in verses 4: 158-159 and 6: 158 not as Messenger or Prophet. After killing the Antichrist there will not be any trial for mankind on the earth. So there will be no need for a Messenger or Prophet then. Since the standard of Judgement in the Hereafter is Adhikr which is formed by Three Time Knower mentioned in verse 25: 59, to propagate Adhikr throughout the world is the only way to get Mercy and help from the Lord as told in verses 22: 40 and 47: 7. See explanation 9: 32-33; 38: 8.