Perhaps one of his many brilliant achievements occurred in Mardin, Turkey at a conference organized by his organization in 2010, where he challenged the theology of al-Qaida by identifying a typographical mistake in a fatwa used consistently by al-Qaida as supporting evidence to legitimize their grotesque ideology and acts of terrorism. His response was documented in a report titled “Challenging the al-Qaida Narrative: The New Mardin Declaration.” The Declaration is considered a threat to extremist ideologies; it has been attacked three times by various spokesmen for al-Qaida and its affiliates, and Anwar Al-Awlaki wrote a response to it, all mentioning Shaykh Abdallah bin Bayyah by name and critiquing the Declaration. Before the error was introduced in 1909, the original fatwa supported evidence for Muslims to live in a manner of peaceful co-existence through the abode of covenance. The reason this new declaration headed by Shaykh bin Bayyah was significant is because Osama bin Laden quoted the incorrect version of Ibn Taymiyya’s “Mardin fatwa” repeatedly in his calls for Muslims to overthrow the Saudi monarchy and wage a jihad against the United States. The mistake highlighted by bin Bayyah proves the inability and lack of authority that jihadist groups have in issuing fatwas.