لَّوْ أَرَادَ ٱللَّهُ أَن يَتَّخِذَ وَلَدًا لَّٱصْطَفَىٰ مِمَّا يَخْلُقُ مَا يَشَآءُ ۚ سُبْحَـٰنَهُۥ ۖ هُوَ ٱللَّهُ ٱلْوَٰحِدُ ٱلْقَهَّارُ
Law araadal laahu aiyattakhiza waladal lastafaa mimmaa yakhluqu maa yashaaa'; Subhaanahoo Huwal laahul Waahidul Qahhaar
God could have chosen any of His creation He willed for offspring, but He is far above this! He is the One, the Almighty.
Had God willed to take a son, he could have chosen whatever he willed from what he creates. Glory be to him! He is God, the One, the Subduer.