الْمُطْعِمُونَ إِذَا قَدَرْنَا
Those who feed when they possess the means.
الْمُهْلِكُونَ إِذَا ابْتُلِينَا
Those who overwhelm opponents when tested.
SettingBoasted traitAbundanceHospitalityConflictMilitary strength
The active participles evoke stable traits while idhā specifies the circumstances in which each appears.