أَفُؤَادِي، مَتَى الْمَتَابُ؟ أَلَمَّا تَصْحُ؟
O my heart, when will repentance come? Will you not yet come to your senses?
This poetic self-address illustrates zajr, rebuke intended to restrain the self. The poet does not expect the heart, treated as a separate person, to answer; he reproaches his own heedlessness.
Fuʾādī is a vocative noun linked by iḍāfah to the first-person possessive suffix. The form of direct address turns inward self-reproach into vivid speech.