Read this: According to Shia beliefs, those who are firmly rooted in knowledge like Muhammad and the imams know the secrets of the Quran. According to Tabatabaei, the statement "none knows its interpretation except God" remains valid, without any opposing or qualifying clause. Therefore, so far as this verse is concerned, the knowledge of the Quran's interpretation is reserved for God. But Tabatabaei uses other verses and concludes that those who are purified by God know the interpretation of the Quran to a certain extent.
Now answer this question, if there is an answer (If it cannot be answered, return "unanswerable"): Who do Sunni Muslims believe can approach Quranic truths besides God and Muhammad?
unanswerable