Shaykh Abd al-Samad Shrine Complex, Natanz, Iran.
The shrine complex for Shaykh 'Abd al-Samad, a Sufi of the Suharwardi order, was developed after his death at Natanz in CE 1299 by the vizier Zayn al-Din Mastari. The complex has become one of the best-preserved Il-Khanid shrine complexes surviving today.
Transliteration of the kufic in the pattern.
لا اله الا الله محمد رسول الله علي ولي الله
la ilaha illa Allah, Muhammad rasul Allah, Ali walli Allah
لا اله الا الله وحده
la ilaha illa Allah, wahadhi