Musannaf Ibn Abi Shayba 16:12

Abu Bakr narrated to us, he said: Ibn ‘Uyaynah narrated to us, from ‘Amr, from ‘Ata’, from Habibah bint Maysarah, from Umm Kurz, that she heard the Messenger of Allah (may Allah bless him and grant him peace) saying: "For the boy, two equivalent sheep, and for the girl, one sheep."