"He it is Who raised among the illiterates a Messenger from among themselves, who recites to them His messages and purifies them, and teaches them the Book and the wisdom, although they were before certainly in manifest error, and others from among them who have not yet joined them." (The Holy Quran, 62:2-3)

The meaning is that the Holy Prophet Muhammad is the teacher not only of his contemporaries, but also of the future generations. He is the teacher of the later generations through the Muslim saints who present in their lives a true example of the Holy Prophet and who broadcast that same message in its original form which was preached by the Holy Prophet.

Hazrat Mirza is that great Muslim saint and mujaddid who is particularly outstanding in preaching the message of the Holy Prophet in its pristine purity, at a time when that message had been so entirely distorted. Also he breathed into his companions such a spirit of sacrifice for the cause of Islam that it gave a glimpse of the companions of the Holy Prophet. So he particularly and perfectly fulfils the prophecy contained in this verse. In Sufi terminology, one who does such work for Islam is called a burooz ('showing a manifestation') of the Holy Prophet.

Hazrat Mirza further says here that this verse does not explicitly state that the later generations would be taught through a follower of the Holy Prophet, but rather mentions the Holy Prophet personally as being their teacher and guide, as if that follower has no existence of his own.

What this really means is that the spiritual light of the Holy Prophet Muhammad is seen reflected so perfectly through the person and mission of Hazrat Mirza Ghulam Ahmad that it is as if this light was being seen directly. So it is the light of the Holy Prophet Muhammad to which Hazrat Mirza invites people, and not to himself in his own right. The person to be accepted as prophet and to be followed is the Holy Prophet Muhammad. Hazrat Mirza, and the mission founded by him, is the means sent by Allah through which the message of the Holy Prophet Muhammad will reach the world in its true and original purity.