وَأَمْكَنَكَ أَنْ تُوَاسِيَ فَمَا آسَيْتَ
You had the chance to console and support others, but you did not.
The line contrasts two past states rather than simply issuing an imperative: assistance was possible, yet assistance did not occur. Amkanaka asserts opportunity; fa-mā āsayta criticizes failure to use it.
The rebuke depends on the premise that the addressee could have helped. If no means existed, the argument would need reevaluation. Its structure is: capacity, omission, then blame—not the unlimited claim that everyone can assist in every circumstance.
Practice: Identify the unstated condition: the hearer actually possessed an opportunity to help.