Sunan ad-Darimi

Muhammad bin Sirin (may Allah have mercy on him) narrated from Qadi Shurayh that a woman left behind her husband, mother, full sister, paternal sister, and maternal brother. He divided the inheritance from six shares and increased it to ten. He gave the husband three shares (i.e., half of six), the full sister the remaining three shares, i.e., half, then the mother one-sixth (one share), the maternal brothers one-third, i.e., two shares, and the paternal sister, to complete two-thirds, one share.