Did Mohammed Ultimately Get Islam's Thirty Day Fast From the "Redemption" of the Secret Gospel of Mark?

I happen to have an uncle who is a Christian native of Palestine. He is Armenian and speaks fluent Arabic and has told me a story about the founder of Islam, which says that many of his teachings were derived from his acquaintance with his teacher a Coptic priest. Whatever the case may be, as we have been developing an argument that at one time Christians did indeed celebrate a thirty day fast it is worth noting that some Christians in the East - i.e. outside of the control of Rome - did indeed preserve the original thirty day fast.

Wagtendonk writes "the Koran itself indicates that the obligation to fast did not come out of the blue by explicit reference to fasts of preceding religious communities." Indeed al-Fihrist of al-Nadim about a thirty-day fast among the Manichaeans and Harranians.

As I have shown in many ways and on many different occasions, the Acts of Archelaus - a text set in Harran - is a Marcionite text. The main character, Marcellus, is after all the Latin equivalent of the Greek 'Marcion,' his beliefs are explicitly Marcionite (Paul as the Paraclete), and only the bishop Archelaus can actually 'see' him.

There can be no doubt that if my understanding is correct the Manichaeans got their idea for the thirty day fast from the Marcionites of Harran. The purpose of Mani's visit to Harran is to gain 'Marcellus' acknowledgement that he was the true Paraclete. 'Marcellus' does not speak to anyone but Archelaus who in turn argues on behalf of the original understanding of 'Marcellus' and Paul that the Apostle alone was the Paraclete.

Indeed if we look carefully at the two thirty day fast we have knowledge of - those of the Manichaeans and the Muslims - it is quite clear that they were both developed relative to a Passover or Easter context. Kramer notes:

According to Ibn al-Nadim the Manichaeans used to fast until sunset for thirty days beginning at Aquarius - i.e. March from the eighth day - quite significantly 1 Ramadan on the first higra fell on the 9th of March 623. To be sure this datum merits consideration.

The point now is that we have a thirty day fast in two traditions one can argue developed in close contact with the Marcionites of Harran.