Surah Maryam 19:5

وَإِنِّى خِفْتُ ٱلْمَوَٰلِىَ مِن وَرَآءِى وَكَانَتِ ٱمْرَأَتِى عَاقِرًا فَهَبْ لِى مِن لَّدُنكَ وَلِيًّا

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

Translation: Saheeh International

Tafsir

And truly I fear my kinsfolk namely those who will succeed me as closest after me in kinship such as my paternal cousins after me that is after my death I fear for the religion lest they forsake it as You have witnessed in the case of the Children of Israel in the way that they changed their religion and my wife is …

Excerpt from Tafsir al-Jalalayn, commentary on 19:5, via Quran.com. The reader has the full commentary and 9 more tafsirs.