What is the ruling on prostrating to other than Allah if it is repeated?

Prostration to anyone other than Allah is forbidden and considered one of the major sins. If it is done with the intention of worshipping someone other than Allah, it is disbelief (kufr). If it is done with the intention of greeting or showing respect, it is a grave sin that does not amount to disbelief, according to many scholars. One must immediately repent from this action and increase in seeking forgiveness and performing good deeds.