لَيْسَ الْعِلْمُ حِفْظَ الْأَلْفَاظِ وَحْدَهُ، وَلَكِنَّهُ فَهْمٌ يُصْلِحُ الْعَمَلَ.
Knowledge is not memorisation alone; it is understanding that improves action.
The statement does not deny every role to memorisation. Waḥdahu narrows the rejected view to memorisation alone. The correcting clause supplies understanding and improvement of practice as the decisive further elements.
Ignoring waḥdahu would falsely imply that memorisation never has value. Preserving the force of a qualifier is essential to precise rhetorical reading.