رَأَيْتُ إِبِلًا مِائَةً لَا تَجِدُ فِيهَا رَاحِلَةً
I saw a hundred camels, yet not one suitable riding camel among them.
The statement depicts a large group in which numbers are plentiful but the desired capability is scarce. When the scene is applied to people, its purpose is no longer an account of animals.
The composite resemblance is the scarcity of a suitably qualified member despite a large population. The camels, the useful mount, and the number together form a scene that can be transferred to a human situation.