That is the bounty of Allah, which He gives to whom He wills, and Allah is the possessor of great bounty.
The Saheeh International Quran Translation
ذَٰلِكَ فَضْلُ ٱللَّهِ يُؤْتِيهِ مَن يَشَآءُ وَٱللَّهُ ذُو ٱلْفَضْلِ ٱلْعَظِيمِThat is the bounty of Allah, which He gives to whom He wills, and Allah is the possessor of great bounty.