When the summer ends and the cold days of autumn starts, Mongolians do this custom as weanling or release the baby foals and mares to their flock of horses. Mongolians release the foals from their tethers on the Dog Day of autumn and do the ceremony of folding the ropes and tethers or foal branding ceremony in that day. In order to do this ceremony, they make a fire near the tether of foal for firing the horse brand, and start branding foals. After branding they put the brand into airag in vessel and come to the ger and have an airag. They do an airag libation to the blue sky and mother earth. Depending on the weather and landscape, the weanling ceremony is done differently in Mongolia. After the libation, the feast starts with general proceeding of other feast.

It's one of the series of customs to celebrate the occasion of fermenting mare's milk.

by participation in the custom

Most herders in the previously mentioned provinces