أَشْهَرُ — أَشْغَلُ
The default comparison is agent-oriented; forms with passive-like sense such as ashhar and ashghal are attested, but not a universal productive rule.
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Usually Agent-Oriented
Ism al-Tafḍīl: Formation, Comparison, Agreement and Parsing
أَشْهَرُ — أَشْغَلُ
The default comparison is agent-oriented; forms with passive-like sense such as ashhar and ashghal are attested, but not a universal productive rule.