عَلِيٌّ يُقَاوِمُ الْأَسَدَ
ʿAlī confronts the lion.
If ʿAlī has just been mentioned, the rest of the assertion may suffice. But repeating his name while describing the startling act draws attention to the very person whose courage amazes the speaker.
Taʿajjub occurs when the speaker reacts to something unusual or unexpected. Explicit mention can then carry astonishment. Tone, preceding discourse, and the unusual nature of the deed provide the relevant cues.