Which property is illustrated by contrasting أَقْسَمَ and قَسَمَ?

Fifteen Semantic Properties of Form IV (Ifʿāl): From Causation to Responsiveness

• Ibtidāʾ: a distinct sense in Form IV
• Muṭāwaʿah: response to a prior action
• Taʿrīḍ: offering for sale
• Ḥaynūnah: harvest time arriving