وَجَدْتُ الطِّفْلَ خَائِفًا
I found the child frightened.
- The attached subject pronoun in وَجَدْتُ refers to the speaker: I.
- الطِّفْلَ is the object: the child was found.
- خَائِفًا describes the child's condition at that moment, so it is haal.
Both الطِّفْلَ and خَائِفًا are mansub, but one is the object and the other describes its condition.