Sheikh's freezing stone Abu Becra Mamuk Bin Berkaya. Bulgar, 1291/1292 (691 Hijra), limestone, carving, inscription in Arabic (there is no Turkic text here) Suls' handwriting. Bulgarian State Historical and Architectural Museum-Reserve. From the foundation of the Assumption Church, the fees of 1981 (J. G. Mukhametshin). Exhibition "Light of Vera-Iman Nura" for the 1100th anniversary of the adoption of Islam by the peoples of the Volga Bulgaria, the present places of the Kazan Kremlin
Bulgarian epigraphic monuments[2][3][4] (Chuvash: Пăлхар эпиграфика палăкĕсем, Tatar: Болгар эпиграфика табылдыклары) - tombstones with inscriptions (epitaphs) of the 13th-14th centuries on the territory of the former Bulgarian ulus of the Golden Horde. The identified gravestones can be divided into several categories. From a "civilizational" point of view, there are such:
Muslim[5]: 175–182 arabographic, of which there are currently about 400 pieces;
Armenian[2]: 60–61 [6] ones with their own graphics, in the amount of 5 pieces and a few more obscure fragments; They also contain Arabic letters.
Muslim tombstones, in turn, can be classified according to language:
only with Arabic text;
having, in addition to Arabic, a text in some Turkic language
Depending on the type of Turkic language, the last group of monuments is divided as follows:
tombstones in the Turkic language (r-language (this group is the largest);
There is also a classification based on the appearance of monuments, in accordance with their artistic features - 1st style and 2nd style.
Tombstones of the 1st style usually have text in z-language, and 2nd style - text in p-language. Therefore, it was initially believed that such a classification covers all the characteristics in a complex. However, there are exceptions to this correspondence.[7]: 12, 23 [8]