وَلَوْ وَجَدَ مَا يَسْتُرُ بَعْضَ الْعَوْرَةِ وَجَبَ اسْتِعْمَالُهُ
If the available material can cover only part of the Awrah, it must still be used. The text prioritizes covering the front and rear private openings when both can be covered; if only one can be covered, it records differing views over which is prioritized.