Musannaf Ibn Abi Shayba 6:199

Waki’ narrated to us, from Mis’ar and Sufyan, from Mus’ab ibn al-Muthanna. Sufyan said: From a man, from Zayd ibn Suhan. And Mis’ar said: From Mus’ab ibn al-Muthanna, that he said on the Day of the Camel: "Bury us, and whatever of our blood has touched the soil."