The allegation of the anti Ahmadi Muslims against the Promised Messiah, Hadhrat Mirza Ghulam Ahmadas is that he wrote books, while Prophets do not write any books. Firstly, this being a standard for the truth of a prophet is not mentioned neither in the Qur’an nor the ahadith of the Prophet Muhammadsaw. You will not find anywhere where it is stated that a Prophet cannot write a book. Therefore this allegation holds no weight at all.
Allah Himself Decides which signs should be shown to the people in regards to the truthfulness of the Prophets. Hadhrat Nuhas was commanded to construct a boat during his time, which was a great sign of his prophethood and a great sign for the people. With the logic of the anti Ahmadis, Nuhas is not a prophet because no other prophet made a boat. Furthermore, many Prophets showed signs and were instructed to do something which was not done by other Prophets. This does not mean that all of these Prophets were false!
Now when we focus on the signs of the Messiah from the Qur’an, we see that Allah Stated in Surah Takwir verse 11:
وَإِذَا الصُّحُفُ نُشِرَتْ
“When the Books are Spread Abroad”
One of the miracle of the Promised Messiahas was his knowledge which was displayed through many of his writings which include the defense of Islam from every allegation and also the beautiful tafaseer of the Qur’an. The disbelievers during the time of the Holy Prophetsaw would raise the objection that he is a Messenger that eats food and walks in the streets, as Allah States in the Qur’an:
وَقَالُوا مَالِ هَٰذَا الرَّسُولِ يَأْكُلُ الطَّعَامَ وَيَمْشِي فِي الْأَسْوَاقِ ۙ لَوْلَا أُنْزِلَ إِلَيْهِ مَلَكٌ فَيَكُونَ مَعَهُ نَذِيرًا
And they say, ‘What is the matter with this Messenger that he eats food, and walks in the streets? Why has not an angel been sent down to him that he might be a warner with him? (Chapter 25, Verse 8)
Disbelieving in a Prophet just because he wrote a book is the same as the disbelievers rejecting the Prophet Muhammadsaw because he used to walk and eat food. It is true that the Prophet Muhammadsaw was unlettered but this was only a distinctive feature of his. This attribute is not found in any other Prophet. Regarding other Prophets, it is clear that they used to write. In fact in many commentaries of the Qur’an of non Ahmadi Muslims, it is stated that Davidas, Mosesas and Isaas used to write. This allegation of the non Ahmadis in reality affects these Prophets as well.
Many prophets bring a book which they call the people towards, but these contain the law from Allah, and the Promised Messiahas was not a law bearing Prophet nor did he claim any of his books to be a book of Shari’ah. In reality, his books included the commentary of the Qur’an and expounded on its beautiful teachings.
One last important point is that according to the Qur’an and ahadith a person does not force others to convert. During the time of the Messiah, jihad had to take place. However, it was not the time for jihad of the sword, as Islam was being attacked by the pen. It is therefore obvious that the Messiah would do Jihad of the pen as well as the requirements for the sword were not available. We have in many of the ahadith that the Messiah would break the cross and prove Islam to be superior over all religions. If this is not done by the sword, it would obviously be accomplished by the pen which further shows the Messiah had to write. Furthermore, one of the ahadith actually refers to a printing press during the time of the Messiah which further shows he would spread publications through this means.