Rudaba becomes pregnant. When her pains become unbearable Zal burns one of the Simurgh's feathers. The bird appears and tells the assembled company to take a knife to Rudaba's womb. Following the Simurgh's instruction a mobad delivers a baby 'like a lion', Rustam. They make a life-size silken effigy of the child and set it on horse.
[Most of the numerous pictures show Rustam's delivery by Caesarian section. The 1335 Berlin picture shows the burning of the Simurgh's feather and the appearance of the bird. Although the text (Mohl1690/Khaleghi 1768) indicates that the Simurgh flew off before the operation, some of the pictures show it hovering over the nativity scene.]