"Ki jini anha astak asqoy hatif Maisi Krazaaji kash shieraki vitihiri asavvasoon. Asavvasoon! Asavvasoon! (I swear before the Mother of Mountains as the stars look down in witness. As the stars look down in witness.)"
In A Song of Ice and Fire, the Mother of Mountains is a mountain sacred to the Dothraki people, located within sight of Vaes Dothrak and a lake known as the Womb of the World, from which, according to myth, the first man emerged riding on the first horse. Only men are allowed to set foot on the Mother of Mountains.