One episode in this novel sees a man decide to stop praying after he bonks his nose on the ground and precious gems fall out of it.  The protagonist's grandparents met because he was her doctor, but he was only allowed to see various parts of her body through a sheet with a small hole cut in it. The protagonist's wife is referred to as a "dung princess," and another character married to Wee Willie Winkie dies after childbirth. Mary Pereira causes
One episode in this novel sees a man decide to stop praying after he bonks his nose on the ground and precious gems fall out of it.  The protagonist's grandparents met because he was her doctor, but he was only allowed to see various parts of her body through a sheet with a small hole cut in it. The protagonist's wife is referred to as a "dung princess," and another character married to Wee Willie Winkie dies after childbirth. Mary Pereira causes the central child-swapping in this work, which includes characters like William Methwold, Aadam Aziz, and the Brass Monkey.  For 10 points, name this novel about Saleem Sinai, who was born at the title hour, by Salman Rushdie.
One episode in this novel sees a man decide to stop praying after he bonks his nose on the ground and precious gems fall out of it.  
Midnight's Children