This is a sentence in Caput V, Liber II of Confessiones of Augustine: Cum interea non satageret idem pater qualis crescerem tibi.
Here what's the case of qualis? According to the declension table it can only be nominative singular, genitive singular or accusative plural. But if it's a relative pronoun, shouldn't it be in the ablative case, with "qualis crescerem tibi" meaning "how I would come forth to you?".