مَا حَضَرَ إِلَّا زَيْدٌ. حَضَرَ مُبْتَسِمًا.
No one attended except Zayd. He came smiling.
The first clause contains restriction of attendance to Zayd. In the second, mubtasiman is a single-word circumstantial accusative qualifying how the arrival occurred. The relation between the two full clauses may be explanation or a fresh report, depending on context.
These devices operate at different levels: restriction concerns the scope of predication, ḥāl concerns event qualification, and faṣl concerns the relation between clauses. A good analysis isolates each level before combining them.