I may be able to shed a smallest of ray of light into your darkness. My Arabic is shaky and I do not know any Pharsi or Pastu.
You have shown five photos, one at the top, five at bottom.
Most of the writing is in cursive Arabic script, written mostly by a steady hand. Both Arabic and Pharsi (Persian or Iranian) use virtually the same script. This could be Arabic not Pharsi.
I can not tell what either stamp says as they are to indistict for my poor, tired eyes. However I suspect the square one is a 'From the Library of...' which is common even in the West.
Photo 4, upper left corner, I see four digets: 1257, if I recall correctly. This may be a date in a Lunar Calendar.
Photo 5 upper left corner. There is a matrix of symbols not in Arabic script. They rather look almost as if they are Norse Runes, but hard to tell.
Sorry I can not be more assistance.