Musannaf Ibn Abi Shaybah

It is narrated from Hazrat Salam bin Miskeen that Hazrat Jabir bin Zaid and Hasan were asked: A woman has taken an oath that she must send a Hadi (sacrificial animal)? Hazrat Jabir bin Zaid said: If she is wealthy, she should send a cow, and if she is poor, she should send a goat. And Hasan said: It is the expiation for an oath; she should fast for three days.