Question:

Which of the three is considered to be the best:

  1. Fasting Mondays and Thursdays
  2. Fasting the three middle days of each Islamic month
  3. Combining both options?

Ash-Shaykh Bin Baaz, rahimahullah, said:

فإذا صام الاثنين والخميس حصل له صيام ثلاثة أيام من كل شهر وحصل له زيادة، فهذا أفضل وأكمل، وإن جمع بينها بأن صام البيض وصيام الاثنين والخميس كله خير

… Thus, if he fasts Mondays and Thursdays, then he has achieved the fasting of three days in every month and he will have something additional. Therefore, this is more preferable and more perfective and if he were to combine between them by fasting the three white days [13th,14th, and 15th of every hijri month] along with fasting Mondays and Thursdays, then all of this is [likewise] good…

[Reference]

Translated by

AbulFattaah Bin Uthman
Abu Fajr