حَفِظَ الدَّلِيلُ أَنْفُسَ الْمُسَافِرِينَ. وَالْحَزْمُ مَنْجَاةٌ.
The guide protected the travelers' lives. Prudence leads to safety.
The first statement concerns a particular event; the second reinforces its lesson through a general proposition. In this context it can function as tadhyīl, an epilogue whose separate predication generalizes the earlier message.
It is not mere synonymic repetition. Nor should every disconnected proverb count as tadhyīl; the generalizing sentence must genuinely relate to and reinforce the earlier assertion.