ISLAM
Ṣaḥīḥ al-Bukhārī
The hadith collection of al-Bukhārī, held by Sunni Muslims to be the most rigorously authenticated.
Ṣaḥīḥ al-Bukhārī runs to 97 books, 10,191 hadiths. The whole of it is held here and free to read, searchable by reference or by the words in it.
The edition held here is صحيح البخاري (original Arabic), in Arabic, in the public domain, from Arabic Wikisource.
It sits on the estate's shelf of 106 sacred works, beside the complete Douay-Rheims Bible, an atlas of the places named in scripture, a timeline and a genealogy.