I am confused about the Iddah mentioned in Surah 65:4. Allah says: “Those in menopause among your women, for them the `Iddah, if you have doubt, is three months; and for those who have no courses”. Ibn Kathir says: "Allah the Exalted clarifies the waiting period of the woman in menopause. And that is the one whose menstruation has stopped due to her older age. Her `iddah is three months instead of the three monthly cycles for those who menstruate, which is based upon the Ayah in (Surah) Al-Baqarah. [see 2:228] The same for the young, who have not reached the years of menstruation. Their `Iddah is three months like those in menopause."
However, in Surah 33:49 Allah says: “O you who have attained to faith! If you marry believing women and then divorce them ere you have touched them, you have no reason to expect, and to calculate, any waiting period on their part.”
So my question is, if you have not had relations with them there is no waiting period, if they don't have a cycle (due to maturity according to Ibn Kathir) then you have to wait three months? Does this mean it's okay to have relations with prepubescent girls? Also what are you waiting for in this time if the girl doesn't get a cycle to begin with? Something doesn't add up for me and I am sure it is due to a misunderstanding on my part. I hope you can clarify this for me.