An-Nisa 4:12 ۞ ولكم نصف ما ترك ازواجكم ان لم يكن لهن ولد فان كان لهن ولد فلكم الربع مما تركن من بعد وصية يوصين بها او دين ولهن الربع مما تركتم ان لم يكن لكم ولد فان كان لكم ولد فلهن الثمن مما تركتم من بعد وصية توصون بها او دين وان كان رجل يورث كلالة او امراة وله اخ او اخت فلكل واحد منهما السدس فان كانوا اكثر من ذالك فهم شركاء في الثلث من بعد وصية يوصى بها او دين غير مضار وصية من الله والله عليم حليم ١٢

In that which your wives leave, your share is a half if they have no child; but if they leave a child, you get a fourth of that which they leave after payment of legacies that they may have bequeathed or debts. In that which you leave, their (your wives) share is a fourth if you leave no child; but if you leave a child, they get an eighth of that which you leave after payment of legacies that you may have bequeathed or debts. If the man or woman whose inheritance is in question has left neither ascendants nor descendants, but has left a brother or a sister, each one of the two gets a sixth; but if more than two, they share in a third, after payment of legacies he (or she) may have bequeathed or debts, so that no loss is caused (to anyone). This is a Commandment from Allâh; and Allâh is Ever All-Knowing, Most-Forbearing.