ضَرَبْتُهُ تَأْدِيبًا
I struck him to teach him discipline.
- ضَرَبْتُ states the action.
- هُ is the maf'ul bihi: the person struck.
- تَأْدِيبًا is the mansub verbal noun that answers why the action occurred.
Therefore تَأْدِيبًا is the maf'ul lahu, not another receiver of the action.
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Maf'ul Lahu: The Reason for an Action
ضَرَبْتُهُ تَأْدِيبًا
I struck him to teach him discipline.
- ضَرَبْتُ states the action.
- هُ is the maf'ul bihi: the person struck.
- تَأْدِيبًا is the mansub verbal noun that answers why the action occurred.
Therefore تَأْدِيبًا is the maf'ul lahu, not another receiver of the action.