What is the ruling on drinking, eating, or having intercourse while forgetting during the day of Ramadan and in voluntary fasting?

The questioner : What is the ruling on unintentional drinking and eating for a person fasting, whether obligatory or voluntary, and what is the ruling on intercourse in a state of forgetfulness in both cases, obligatory and voluntary? Please inform us, may Allah reward you.

The Shaykh : As for eating and drinking while forgetting, there is no difference between the obligatory and the voluntary; it is as he (peace and blessings be upon him) said: As for intercourse while forgetting, it is a matter I cannot conceive of. I cannot conceive of it between both spouses. I can conceive of it regarding one of the spouses who is heedless, deeply immersed in what? In heedlessness. But what about the other spouse? And I do not specify the male over the female, or the female over the male. Rather, I say one of them may be heedless, and the other is also heedless, meaning heedlessness upon heedlessness, and they engaged in intercourse. This is a matter that is absolutely inconceivable. Therefore, I must assume that a question arose from one of the spouses. In that case, if we assume that one of them was actually forgetting and the other was taking advantage of this forgetfulness.

Another questioner : ...

The Shaykh : So, the one who is forgetting, there is no difference between his eating, drinking, and intercourse. As for the one who remembers, he must perform what? The major expiation. How?

Another questioner : Unless he remembers at the very last moment.

The Shaykh : It is of no use. If the circumcision touches the circumcision, the prohibited act has occurred.