«مَوَدَّةٌ تَدُومُ لِكُلِّ هَوْلٍ»
A love that persists through every terror.
The accompanying expression «وَهَلْ كُلُّ مَوَدَّةٍ تَدُومُ» asks whether every love persists. The two poetic segments are related through an arranged reversal and a meaningful question; the limits of the relevant letter sequence must be identified before claiming exact symmetry.
In verse, one must identify the full span of the proposed reversal and then test its letters. Reversing one isolated word does not establish that an entire line is qalb; the device may concern the combined poetic expression.