لَا يَصِحُّ الْحُكْمُ بِالْغِشِّ بِلَا بَيِّنَةٍ. وَالْعَدْلُ أَسَاسُ الثِّقَةِ.
It is unsound to judge dishonesty without evidence. Justice is the foundation of trust.
The second clause supplies an independent general maxim that reinforces the first specific proposition. With that intended relation it can function as tadhyīl. It neither substitutes the exact particular fact nor merely adds another isolated observation; it broadens the supporting principle.
A memorable maxim does not automatically become tadhyīl. It must actually embrace or reinforce the point that precedes it.