法苑珠林 69.18

69.18

'As for the fourth intermediate existence: if a person of Jambudvīpa ends their life to be born in the realm of Pūrvavideha, then signs appear. They see the sign of a blue fine cloth; all is blue, completely covering empty space. They see their houses all like empty space; fearing that the blue cloth will fall, they raise their hands to ward it off. The relatives say that they are warding off empty space as their life ends. They see the intermediate existence as having the form of a horse. They see their father like a stallion and the mother like a mare, the parents uniting in passionate defilement. If to be born as a male, he thinks: "I should unite with this mare." If to be born as a female, she sees her own body in the form of a mare and thinks: "Why does such a stallion not unite with me?" Having thought this, she immediately takes a female body. This is called the fourth intermediate existence of being born in Pūrvavideha.'