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Surah 42. Ash-Shura
Ayah 49 - 50
49 لِّلَّهِ مُلْكُ ٱلسَّمَـٰوَٰتِ وَٱلْأَرْضِ ۚ يَخْلُقُ مَا يَشَآءُ ۚ يَهَبُ لِمَن يَشَآءُ إِنَـٰثًا وَيَهَبُ لِمَن يَشَآءُ ٱلذُّكُورَ
50 أَوْ يُزَوِّجُهُمْ ذُكْرَانًا وَإِنَـٰثًا ۖ وَيَجْعَلُ مَن يَشَآءُ عَقِيمًا ۚ إِنَّهُۥ عَلِيمٌ قَدِيرٌ
[49-50] To Allah belongs the Kingdom of the heavens and the earth.76 He creates whatever He wills: He gives daughters to whom He wills, and sons to whom He wills; or He gives both sons and daughters to whom He wills and makes barren whom He wills. Indeed. He knows everything and has power over everything.77
76That is, 'If the people who are involved in disbelief and polytheism do not believe even after the admonition, they may not, for the truth is the truth. The kingdom of the earth and heavens has not been entrusted to the so-called kings and despots and chiefs of the world nor has any prophet, saint, god or goddess any share in it, but its Master is One Allah alone. His rebel can neither succeed by his own power, nor can any of the beings whom the people look upon as owners of divine powers by their own folly, come to their rescue and aid."
77This is a manifest proof of Allah's Sovereignty being absolute. No man, whether he be posing as owner of the highest worldly authority, or regarded as owner of great spiritual powers, has ever been able to produce children for himself according to his own choice and desire, not to speak of providing children for others. The one whom Allah made barren could not have children through any medicine, any treatment, any amulet or charm. The one whom Allah gave only daughters could not get a single son by any device, and the one whom Allah gave only sons could not have a single daughter by any means. In this matter everyone is absolutely helpless. So much so that before the birth of a child no one could know whether a son was taking shape in the mother's womb or a daughter. Even after seeing all this if some one posed to be all-powerful in God's Kingdom, or regarded another as a possessor of the powers, it would be his own shortsightedness for which he himself will suffer, the truth will not change at all.