The Kazan Icon of the Mother of God is a revered miraculous icon of the Mother of God, which appeared in Kazan.The history of the Kazan Icon of the Most Holy Theotokos begins in the 16th century. It was then, on July 21, 1579, that her appearance took place.Iconographically, the Kazan icon is usually referred to as an abbreviated version of the Hodegetria. Such icons go back to the prototype kept in Blachernae Church in Constantinople.
This image performed many miracles and is considered one of the most powerful icons of the Virgin.
On the day dedicated to the icon, you can read a prayer to the Virgin Mary and state your request in it.
It is necessary to pray to the Kazan Mother of God from a pure heart and with good thoughts.
Source: https://www.unian.net/lite/holidays/molitvy-kazanskoy-ikone-bozhey-materi-21-iyulya-4-silnye-molitvy-11910345.html