Salam
Please find uploaded the treatise on the issue of Ilm al-Ghayb by Shaykh Ahmad al-Barzanji of Madinah the illuminated, a copy of which was provided by Shaykh Khalid al-Turkestani from Mecca. I have not read the treatise in full at the time of posting here, but I believe a copy of this work is much sought after by students of knowledge.
The file can be downloaded from here: Barzanji Ilm Ghayb.
Wassalam