The Ruling of Oversleeping when Fasting

Sheikh Saleh al Fawzaan حفظه الله was asked:

There is a person who prohibits (the people from) over sleeping in Ramadhan & says "it is upon a Muslim to be awake and active, it is not appropriate that he over sleeps". So, what is your opinion O' noble Sheikh?

A: Yes he should warn from over sleeping in this Month (Ramadhan), I mean sleeping in the day (time) because it makes (one) lazy from performing acts of obedience, perhaps it may cause one to miss the congregation prayer or it may cause the time for (that specific prayer) to pass by. What is requested from a Muslim is that he be energetic in acts of obedience and (that) he sleeps in the night, especially in the first part of it (the night), so he can arise in the morning energetic to perform and participate in acts of obedience.

(The Reference: al Muntaqaa, (111/5), fatwa number:167)

Al Imaam bin Qudaamah, may Allaah have mercy upon him, said:

"The night and the day is altogether 24 hours, so what is neutral is that one sleeps a third of it, which is eight hours. So whoever sleeps less than that (eight hours) then he is not safe from his body becoming sick and whoever sleeps more than that will become very lazy. So if one sleeps more that (eight hours) in the night then there is no need for him to sleep in the day (time) however if one sleeps less than it then he should make up for it in the day(by taking a noon nap).

(The Reference: Muktasar Manhajil Qaasideen, page:67, print: Ibn Rajab)

Also Our Sheikh Yahya bin Alee al Hajooree, حفظه الله, has mentioned that if a person stays awake for the majority of the night in prayer then it is okay for him to oversleep in the day.