«وَاصْبِرَا عَلَى كَيْدِ الزَّمَانِ وَكَدِّهِ»
Be patient with the age’s plotting and its toil.
Kayd denotes plotting or contrivance; kadd means toil and exertion. The words are phonetically close but meaningfully distinct.
Iṣbirā is a dual imperative, still addressed to both spouses. The paired nouns gather different burdens of life into one compact expression.