In the context of the Seal of Prophethood (khatm-e-nubuwwat), I would like to reiterate that the primary meaning of this term implies that all the matters relating to prophethood, instituted by Allah in the beginning with Adam, on whom be peace, were brought to their complete and final end with the Holy Prophet, peace and blessings of Allah be upon him. This is the broad and apparent sense.
The second connotation is that the circle of the excellences of prophethood reached its final point of completion with the Holy Prophet, peace and blessings of Allah be upon him. It is absolutely true that the Quran perfected deficient ideologies and prophethood reached its final end. This is why Islam proved itself to be true to the following:
اَلْيَوْمَ اَكْمَلْتُ لَكُمْ دِيْنَكُمْ
“This day have I perfected your religion for you.”
In short, these are the signs of prophethood; it is not necessary to debate the deeper intricacies and details of these signs. The principles are clear and manifest, and are well-established truths.
A believer need not engage in inconsequential matters. Belief is necessary. If an opponent raises an objection, we can provide a sufficient rebuttal. If an opponent does not desist, we can challenge them to first prove the issues of secondary nature from their own Faith.
Therefore, the ‘seal of prophethood’ on the Holy Prophet, peace and blessings of Allah be upon him, was one of the signs of his prophethood, and one in which a Muslim believer must believe.”
(Hazrat Mirza Ghulam Ahmadas, Malfuzat, Vol. 2, pp. 7-8)