Surah 4, Verse 12

Your share in the property the wives leave behind is half if they die without an issue, but in case they have left children, then your share is one-fourth after the payment of legacies and debts; and your wife shall inherit one-fourth of what you leave at death if you die childless, if not, she will get one-eighth of what you leave behind after payment of legacies and debts. If a man or a woman should die without leaving either children or parents behind but have brother and sister, they shall each inherit one-sixth. In case there are more, they will share one-third of the estate after payment of legacies and debts without prejudice to others. This is the decree of God who knows all and is kind.

— Quran 4:12

Quote from Quran 4:12