आपद्द् हि सौहृदस्थैर्यमुत्पादयति ॥ कZ_०७.९.०८ ॥
āpadd hi sauhṛdasthairyām utpādayati
For crisis produces steadiness (tested firmness) in friendship.
By evaluating allies based on behavior during emergencies—speed of aid, cost borne, and willingness to risk—rather than on peacetime assurances.