Ordinary correction: “I said the meeting would be on Monday, but in fact it is on Tuesday.” This repairs misinformation.
Rhetorical rujūʿ: “I thought the garden lifeless—no, its flowers contain the full brilliance of spring.” Here withdrawing the earlier judgment heightens the later description.
Both are intelligible, but only the second deliberately makes retraction an expressive device. An analysis should identify the initial assertion, its negation, and the rhetorical effect.