this practice began in jerusalem, and from there it was carried to russia, where it was followed in various dormition cathedrals, in particular that of moscow. the practice slowly spread among the russian orthodox, though it is not by any means a standard service in all parishes, or even most cathedrals or monasteries. in jerusalem, the service is chanted during the vigil of the dormition. in some russian churches and monasteries, it is served on the third day after dormition.