Fasting 
Bukhari :: Book 3 :: Volume 31 :: Hadith 205
Narrated Muhammad bin 'Abbas:
I asked Jabir "Did the Prophet forbid fasting on Fridays?" He replied, "Yes." (Other narrators added, "If he intends to fast only that day.")
Fasting
Bukhari :: Book 3 :: Volume 31 :: Hadith 205
Narrated Muhammad bin 'Abbas:
I asked Jabir "Did the Prophet forbid fasting on Fridays?" He replied, "Yes." (Other narrators added, "If he intends to fast only that day.")