Asrar al-Tawhid

{{Short description|12th century Persian work about the Sufi mystic Abū-Sa'īd Abul-Khay}}

Asrar al-Tawhid fi Maghamat al-Sheikh Abusa'id ({{langx|fa|اسرار التوحید فی مقامات ابوسعید}}, {{langx|ar|أسرار التوحيد في مقامات أبو سعيد}}, "The Mysteries of Unification") is a book of 12th century Persian literature about the Sufi mystic Abū-Sa'īd Abul-Khayr.{{Cite web |last=Foundation |first=Encyclopaedia Iranica |title=Welcome to Encyclopaedia Iranica |url=https://www.iranicaonline.org/articles/asrar-al-tawhid-fi-maqamat-al-sayk-abi-said-principal-source-for-the-life-and-teachings-of-the-well-known-mystic |access-date=2025-01-17 |website=iranicaonline.org |language=en-US}}{{Cite journal |last=Pirani |first=Mansoor |date=2020-08-22 |title=Re-reading of Mystical Anecdotes of Asrar al-Tawhid through Positive Psychology Approach |url=https://jml.alzahra.ac.ir/article_5254.html?lang=en |journal=Mystical Literature |language=en |volume=12 |issue=22 |pages=7–32 |doi=10.22051/jml.2020.32012.1993 |issn=2008-9384}}{{Cite journal |last=Esmaeeli |first=Morad |last2=Mohammadi |first2=Hossein |last3=Rabiezadeh |first3=Ali |date=2022-10-23 |title=The underlying component Meanings in the Thoughts of Abu Saeed Abu Alkheir (Based on Viktor Frankl’s Views) |url=https://msil.atu.ac.ir/article_15078.html?lang=en |journal=Mysticism Studies in Literature |language=en |volume=1 |issue=2 |pages=11–40 |doi=10.22054/msil.2022.69908.1061 |issn=2821-0743}}

Thought to be written by Muhammad ibn Monavvar, one of Abul-Khayr's grandsons, 130 years after his death, it is also considered a landmark work of Sufi literature as well as one of the most outstanding Persian prose works of the 12th century.

A copy of this book has been derived from a scattered hand-written pages stored in a book in a Russian library and discovered by Valentin Zhukovski in 1899. Zhukovsky found 2 different copies of the same book, and published the first copy adding the second copy's differences on the side (as side notes or subscripts).