Answer
(Fatwa: 1047/1047=M/1430)
Your father, in his lifetime, distributed ten acres of land among his five sons equally and gave the land in their possession. So, all of them have become owner of their shares. Now, the sisters cannot lay any demand in this ten acre land, though the father should have included the daughters as equal partners; so that there is equal conduct with all of the children. The father was wrong by not giving any share to the daughters. However, now the left two acre land is the property of the father, all the heirs i.e. wife, sons and daughters (mother, brothers and sisters) will have their shares therein. As per the Shariah, after due rights preceding inheritance, it will be distributed in 104 shares. Out of the total, 13 shares will go to your mother, 14-14 shares to each brother and 7-7 shares to each sister.
Mother: 13
5 Brothers: 70 (14 Shares each)
3 Sisters: 21 (7 shares each)
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband