Is bid'ah divorce effective? And is the divorce of a nursing woman effective?

The Shaykh : We will answer you. May Allah reward you with good! Bid'ah divorce, specifically regarding the question you asked, is not effective. However, it is not permissible to generalize this, because among bid'ah divorce is the divorce of a menstruating woman. It is established in the two Sahihs and elsewhere that when Ibn 'Umar (may Allah be pleased with him) divorced his wife while she was menstruating, it was counted as one divorce for him. So this and that are exceptions: this is an exception in terms of effectiveness, and divorce during the waiting period does not have an effect; it is only one divorce, no matter how many times the divorce is pronounced. I think the answer is clear.

The questioner : The nursing woman?

The Shaykh : As for the nursing woman, the answer does not come to my mind right now, so I say: half of knowledge is saying "I do not know"!