A surplus expression may qualify the statement in a way that distorts the intended relation. This is examined as meaning-damaging padding. The issue is not simply that a phrase is new, but that its addition changes or contradicts the intended judgment.
For example, akramtu kulla al-ṭullābi, aʿnī baʿḍahum means 'I honored all the students—meaning some of them'. If the intent was genuinely to include everyone, the later restriction conflicts with it. The contradiction illustrates how an addition can damage the intended assertion.