Is singling out Saturday for optional fasting allowed?
A hadeeth from Tirmidhi: (gist) Do not fast on Saturday except the what is fard. It is not haraam as such, but is disliked. The context is that Saturday is an auspicious day for the Jews.
(2.3) Fasting
Fasting
Fasting on a Friday
Is singling out Friday for optional fast permissible?
Moon Sighting
Why is there a difference in the beginning and ending of Ramadan?
I’tikaaf
Basic guidelines on spiritual retreat.
Toothpaste whilst fasting
Makrooh