These are links to Muslim sites:

• Weak and fabricated Hadith (*, *)
• Evaluation of some commonly quoted hadith
• Greater and 'Lesser' Jihad?, Greater & lesser Jihaad
• The Story of 'Umar Being Corrected by a Woman
• On the Hadeeth Naming the 99 Names of Allah: [1], [2], [3], [4]
• The narrations forbidding anal intercourse