Wa `alaykum as-Salamu waRahmatullahi waBarakatuh.
In the Name of Allah, Most Gracious, Most Merciful.
All praise and thanks are due to Allah, and peace and blessings be upon His Messenger.
In this fatwa:
Responding to your question, Dr. Muhammad Said, Professor of Islamic Studies at Al-Azhar University, and a Visiting Professor at Tiba University, states,
Scholars have defined the diseases that allow a Muslim to break his fast during Ramadan as follows:
1- A disease which increases due to fasting.
2- A disease whose recovery may be delayed because of fasting.
3- A disease which causes a sever difficulty even though one does not have his disease increased or delayed (Ibn Qudamah, al-Mughni 3:156)
In the case of our questioner, he can have his surgery, but he must make up for this day later.
Allah Almighty knows best.
Editor’s note: This fatwa is from Ask the Scholar’s archive and was originally published at an earlier date.