When an incident as insignificant as this...
When an incident as insignificant as this, attracts the attention of his old and new enemies, had there ever been some record testifying the Holy Prophet's knowledge of reading and writing, it would have not remained hidden from them, but, it would rather have been magnified several times. For clarification, the point will be discussed in two parts: (1) The Pre-prophetic period; and (2) The Post-prophetic period.
The post-prophetic period, will also be discussed in two parts: (i) Writing; and (ii) Reading Later on, it will be concluded that it is unanimously agreed upon, by both Muslim and non-Muslim scholars, that before his prophetic mission the Prophet (SA) had not the slightest acquaintance with either reading or writing. However, during the post-prophetic period it is not very certain.
During the post-prophetic period what is more certain is that he could not write; however, the fact that he could not read is not so certain. It can be concluded from certain Shi'i accounts that he could read but not write during the post-prophetic period. Although Shi'i accounts are also not unanimous in this respect. What can be inferred from the various pieces of evidence is that he neither read nor wrote during the post-prophetic period also.
In order to study the pre-prophetic period, we need to discuss the general conditions which prevailed in, what is now, Saudi Arabia during that period from the viewpoints of reading and writing. It is inferred from historical accounts that those who could read and write at the advent of Islam were very few in number.
The Development Of Calligraphy In Hijaz In the end of the book: "Futuh al-Buldan", Al-Baladhuri thus describes the early development of calligraphy in Hijaz: "First there were three men of the tribe `Tay' (in the vicinity of Syria) who initiated the Arabic handwriting and compared the Arabic alphabets to the Syriac ones. Later, some men from Anbar learned the alphabets from these men. The inhabitants of Hirah learned the handwriting from the inhabitants of Anbar.
Bushr ibn `Abd al-Malik al-Kindi, brother of Al-Ukaydir ibn `Abd al-Malik al-Kindi, ruler of Dumat al-Jandal, who was a Christian, learned the Arabic handwriting in the course of his trips to and from Hirah. This same Bushr went on a business trip to Makkah, where he was seen writing by Sufyan ibn Umayyah ( Abu Sufyan's paternal uncle) and Abu Qays ibn `Abd Munaf Ibn Zuhrah. They asked him to teach them writing and he did so.