Praise be to Allah, Who has given me in old age Ismail and Ishaq; most surely my Lord is the Hearer of prayer:

So when he withdrew from them and what they worshipped besides Allah, We gave to him Ishaq and Yaqoub, and each one of them We made a prophet.

O Prophet! surely We have made lawful to you your wives whom you have given their dowries, and those whom your right hand possesses out of those whom Allah has given to you as prisoners of war, and the daughters of your paternal uncles and the daughters of your paternal aunts, and the daughters of your maternal uncles and the daughters of your maternal aunts who fled with you; and a believing woman if she gave herself to the Prophet, if the Prophet desired to marry her-- specially for you, not for the (rest of) believers; We know what We have ordained for them concerning their wives and those whom their right hands possess in order that no blame may attach to you; and Allah is Forgiving, Merciful.

Allah's is the kingdom of the heavens and the earth; He creates what He pleases; He grants to whom He pleases daughters and grants to whom He pleases sons.