مَوَالِيَ is the plural of مَولٰی . This word has many meanings in the Arabic language, one of them being a cousin, or other relations on the father's side. Here the word has been used in this sense.
- 19:55
وَإِنِّي خِفْتُ الْمَوَالِيَ مِنْ وَرَائِي وَكَانَتِ امْرَأَتِي عَاقِرًا فَهَبْ لِي مِنْ لَدُنْكَ وَلِيًّا
But I fear my relatives after me; and my wife is barren. So grant me a successor as a favour from You
- common.revelation-Meccan
- common.hizb : 122