As per Authenticity

• What are the four types of Ahadith based on authenticity?

  Sahih, Hasan, Da'eef, Mau’doo
• What characterizes Sahih Ahadith?

  They are absolutely correct with no weaknesses
• What does the term 'Isnad' refer to in Ahadith?

  Chain of transmission
• How do Hasan Ahadith differ from Sahih Ahadith?

  Hasan Ahadith have slight weaknesses in the chain
• What is the status of Da'eef Ahadith?

  They have problems in the chain or contents
• What issues can make an Ahadith Da'eef?

  A weak memory of a narrator or lying
• What does Mau’doo mean in the context of Ahadith?

  Fabricated or false Hadith
• Why do Mau’doo Ahadith have no place in authentic collections?

  They are made up and false