أَيْقَظَكَ الدَّهْرُ فَتَنَاعَسْتَ
Time awakened you, and you responded as though drowsy.
Fa tightly links the first event and its contrary response: warning followed by indifference. The same pattern occurs in jadhabaka al-waʿẓu fa-taqāʿasta and the later pairs.
Wa introduces the next example, while fa binds each warning to what the hearer did after it. The construction makes deliberate resistance strikingly visible.