وَاِنِّيۡ خِفۡتُ الۡمَوَالِيَ مِنۡ وَّرَآءِيۡ وَكَانَتِ امۡرَاَتِيۡ عَاقِرًا فَهَبۡ لِيۡ مِنۡ لَّدُنۡكَ وَلِيًّاۙ‏

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