What did the Messenger of Allah (peace be upon him) say about fasting on Friday?
 Muhammad b. 'Abbas b. Ja'far reported:                      I asked Jabir b. 'Abdullah (Allah be pleased with both of them) as he was circumambulating the House (Ka'ba) whether the Messenger of Allah (may peace be upon him) had forbidden the fasting on Friday, whereupon he said: Yes, by the Lord of this House.