Surah Al-Isra, ayah 31

وَلَا تَقۡتُلُوٓاْ أَوۡلَٰدَكُمۡ خَشۡيَةَ إِمۡلَٰقٖۖ نَّحۡنُ نَرۡزُقُهُمۡ وَإِيَّاكُمۡۚ إِنَّ قَتۡلَهُمۡ كَانَ خِطۡـٔٗا كَبِيرٗا ٣١

Walā taqtulū awlādakum khashyata imlāqin nahnu narzuquhum wa iyyākum inna qatlahum kāna khit'an kabīrā

And do not kill your children for fear of poverty. We provide for them and for you. Indeed, their killing is ever a great sin.