Surah Maryam, Verse 5

وَإِنِّي خِفۡتُ ٱلۡمَوَٰلِيَ مِن وَرَآءِي وَكَانَتِ ٱمۡرَأَتِي عَاقِرٗا فَهَبۡ لِي مِن لَّدُنكَ وَلِيّٗا٥

wa-innī khif'tu l-mawāliya min warāī wakānati im'ra-atī ʿāqiran fahab lī min ladunka waliyyan

And indeed, I fear the successors after me, and my wife has been barren, so give me from Yourself an heir