Musannaf Ibn Abi Shayba 26:64

Ibn Fudayl narrated to us, from Bassam, from Fudayl, from Ibrahim, regarding a woman who left behind her maternal siblings, both men and women, and they were [also] her paternal cousins among the agnatic heirs (*al-‘asabah*). He said: They divide the one-third among themselves, with the men and women being equal in it. The remaining two-thirds are for their males exclusively, without the females, according to the judgment of the companions of Muhammad, may Allah bless him and grant him peace. Abu Bakr said: This, according to all of their statements, is out of three shares.