لَقِيَ الرَّسُولُ الدَّلِيلَ وَهُوَ مُتْعَبٌ.
The messenger met the guide while he was tired.
Without sufficient context, huwa may refer to either masculine participant. If the guide is intended, wa-kāna al-dalīlu mutʿaban resolves the ambiguity; if the messenger is intended, wa-kāna al-rasūlu mutʿaban is clearer.
Concision does not justify leaving the intended bearer of the circumstantial description uncertain when clarity is required by the situation.