Now is ok for a pregnant sister who is diabetes to fast during Ramadan, as long as she is told that she needs 3 to 4 meals a day.
Praise be to Allah, the Lord of the Worlds; and may His blessings and peace be upon our Prophet Muhammad and upon all his Family and Companions. A patient (diabetic or otherwise) who finds it harmful to fast may break his fast and make up for the missing days if his sickness is curable. But if his sickness is incurable, then he has to feed needy people, as stated in the verse: …And as for those who can fast with difficulty, (e.g. an old man, etc.), they have (a choice either to fast or) to feed a Miskîn (poor person) (for every day)…[2:184]. He also Says: …and whoever is ill or on a journey, the same number [of days which one did not observe Saum (fasts) must be made up] from other days.[2:184]. Accordingly, if that woman is unable to fast and if trusted doctors affirmed that to fast is harmful for her and that she has to have three or four meals a day, and that these meals cannot be delayed to the night, then in such cases she may break her fast. If her sickness is curable, then she has to make up for the missing days. But if otherwise her sickness is incurable, then she has to feed a poor person for every day missing. Allah knows best.
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