Srimad Bhagavatam Canto 06, Chapter 09, Text 09

SB 6.9.9

sasvat-kama-varenamhas
 turiyam jagrhuh striyah
rajo-rupena tasv amho
 masi masi pradrsyate
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
In return for Lord Indra’s benediction that they would be able to enjoy lusty desires continuously, even during pregnancy for as long as sex is not injurious to the embryo, women accepted one fourth of the sinful reactions. As a result of those reactions, women manifest the signs of menstruation every month.
 
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
Women as a class are very lusty, and apparently their continuous lusty desires are never satisfied. In return for Lord Indra’s benediction that there would be no cessation to their lusty desires, women accepted one fourth of the sinful reactions for killing a brahmana.
Srimad Bhagavatam Canto 06, Chapter 09, Text 08
Srimad Bhagavatam Canto 06, Chapter 09, Text 10