I understand you're looking for a blog post about the PDF titled Kitab Asrorul Abjadiyah (often spelled Asrār al-Abjadiyyah), which deals with the secrets or esoteric meanings of Arabic letters and their numerical values (Abjad).
Abjadiyah Systems: Discussing the traditional arrangement of the Arabic alphabet, such as the Masyriqi system used in Eastern regions. Kitab Asrorul Abjadiyah Pdf
Here is a draft:
Some of the key concepts and themes explored in Kitab Asrorul Abjadiyah include: I understand you're looking for a blog post
Authorship is often attributed to figures like Al-Buni (d. 1225 CE), author of the famous Shams al-Ma‘arif, or other Sufi metaphysicians such as Ibn ‘Arabi. author of the famous Shams al-Ma‘arif