Musannaf Ibn Abi Shayba 18:876

Abu Bakr narrated to us, he said: al-Thaqafi narrated to us, from Ayyub, from Abu Qilabah, from Abu al-Malih, that a female circumciser in Medina circumcised a young girl, and she died. Umar said to her: "Did you not leave [some of the skin]?" And he placed her blood money (diyah) upon her paternal relatives (aqilah).