What is the rhetorical effect of tūʿīhi / taʿīhi?

The Ṣanʿāʾ Maqāmah: Missed Goodness, Competing Priorities, and Contradictory Conduct

• They have identical meanings
• Merely repeating a past tense
• An unrelated anecdote
• A sound-and-meaning echo between storing money and retaining advice