A sick woman whose recovery is not expected: Does she pay her expiation every day in Ramadan, or after the month ends?

Question : He (may Allah preserve him) was asked about a sick woman whose recovery is not expected: Does she pay her expiation every day, or after Ramadan ends?

Answer : We say that if a person is ill with an illness that does not require him to break his fast, such as old age, cancer, or chronic diseases, and if fasting is difficult for him, then it is sufficient for him to feed one poor person for each day, whether he feeds them every day or gathers them all together. However, we must know that it is not sufficient to repeat feeding one poor person; for example, if you know a poor person and you go to feed him every day, that is not sufficient, because the obligation is one poor person for each day, and it is not sufficient to repeat it with half of one person. Accordingly, if Ramadan is thirty days, how many do we feed?
Thirty poor people. But how do we feed them? We say that if we wish, we gather ten of them when ten days of the month have passed and we host them, and when twenty days have passed, we gather another ten and host them, and if it is thirty days, we gather ten others besides the first ones and host them, or we gather them all on the last day of the thirty. Anas ibn Malik, the servant of the Messenger of Allah (peace and blessings be upon him), when he grew old and could no longer fast, would gather thirty poor people on the last day and feed them dates and barley. If you wish, you may give them the food when it is cooked, and you make the sa' (a dry measure of about 3 kg) for four poor people. The sa' of rice for four poor people is for how many days? For four days. If the poor person is given the food, his food is purified, because he was unable to fast and unable to feed.