أُوصِيكَ بِثَلَاثٍ: الصِّدْقِ وَالْعَدْلِ وَالرَّحْمَةِ.
I advise you to uphold three things: truthfulness, justice and mercy.
The word “three” first creates expectation. Naming the three qualities then resolves it, directing attention and organising the listener’s reception.
Iṭnāb means functional expansion, not verbosity for its own sake. Added words should clarify, reinforce or heighten impact rather than merely repeat.