Context: A number of theories have been proposed regarding Avicenna's madhab (school of thought within Islamic jurisprudence). Medieval historian Ẓahīr al-dīn al-Bayhaqī (d. 1169) considered Avicenna to be a follower of the Brethren of Purity. On the other hand, Dimitri Gutas along with Aisha Khan and Jules J. Janssens demonstrated that Avicenna was a Sunni Hanafi. However, the 14th cenutry Shia faqih Nurullah Shushtari according to Seyyed Hossein Nasr, maintained that he was most likely a Twelver Shia. Conversely, Sharaf Khorasani, citing a rejection of an invitation of the Sunni Governor Sultan Mahmoud Ghazanavi by Avicenna to his court, believes that Avicenna was an Ismaili. Similar disagreements exist on the background of Avicenna's family, whereas some writers considered them Sunni, some more recent writers contested that they were Shia.

Question: What secret society was Avicenna considered to be a follower of?
Answer: the Brethren of Purity

Question: Who thought that Avicenna was a Brethren of Purity follower?
Answer: Medieval historian Ẓahīr al-dīn al-Bayhaqī

Question: What Islamic denomination was Avicenna thought to be a member of?
Answer: Sunni

Question: Who thought Avicenna was a Shia?
Answer: Nurullah Shushtari

Question: What was the name of one man who thought Avicenna was Sunni?
Answer: Jules J. Janssens

Question: What type of Islamic school did Avicenna invent?
Answer: Unanswerable

Question: What group did Avicenna found?
Answer: Unanswerable

Question: Who did Zahir al-Bayhai belove belonged to the Sunni Hanafi?
Answer: Unanswerable

Question: Who's family is considered Sunni by modern writers?
Answer: Unanswerable

Question: Who's court did Avicenna join?
Answer: Unanswerable

Question: What secret society was Avicenna considered to be followed by?
Answer: Unanswerable

Question: Who thought that Avicenna was a Brethren of Impurity follower?
Answer: Unanswerable

Question: What Islamic denomination was Avicenna thought to be a rejecter of?
Answer: Unanswerable

Question: Who knew Avicenna was a Shia?
Answer: Unanswerable

Question: What was the name of one woman who thought Avicenna was Sunni?
Answer: Unanswerable