Musannaf Ibn Abi Shayba 8:540

Abu Bakr narrated to us, he said: Waki’ narrated to us, from Mis’ar, from ‘Abd al-Malik ibn Maysarah, from Tawus, who said: I never saw anyone disagree with Ibn ‘Abbas on a matter and he leave it until he had established it [as his own view]. However, Jabir ibn ‘Abd Allah disagreed with him regarding a woman who performs Tawaf and then menstruates. Ibn ‘Abbas said: "She may depart." So they sent [someone] to a woman who had experienced that, and she agreed with Ibn ‘Abbas.