6. The Harmful Mosque (Masjid al-Dirar)

One of the most illuminating episodes in Islamic history regarding the hypocrites' schemes is recounted in Surah At-Tawbah concerning what became known as Masjid al-Dirar (the mosque of harm). This incident reveals the complex strategies employed by the hypocrites to undermine the Muslim community from within, under the guise of piety and religious practice.

The background of this incident is particularly significant. After the conquest of Makkah and the Battle of Hunayn, an arch-enemy of Islam named Abu Amir fled to Syria. From there, he initiated communications with the Byzantine Empire (Roman Emperor) to organize an invasion against the Muslims. Cleverly, he established secret contacts with hypocrites in Madinah to serve as his "inside men" when the planned invasion would occur.

These hypocrites, outwardly professing Islam while harboring disbelief, constructed a building in the guise of a mosque near Masjid Quba (the first mosque built in Islam). Their intentions, however, were sinister—they planned to use this structure for clandestine meetings and to store weapons in preparation for Abu Amir's return with Byzantine forces. To lend legitimacy to their scheme, they invited the Prophet Muhammad (peace be upon him) to inaugurate this mosque.

Allah (swt) exposed their plot in verses 107-108 of Surah At-Tawbah:

Allah (swt) then instructs the Prophet (peace be upon him) regarding his response to this deceptive structure:

Allah subhanahu wa ta'ala presents one of the most profound spiritual transactions in the Quran in verses 111-112 of Surah At-Tawbah, establishing a divine covenant with the believers:

This verse establishes a powerful spiritual framework for understanding the relationship between Allah and the believers. Allah subhanahu wa ta'ala presents this relationship as a transaction – He is the purchaser, the believers are the sellers, and what is being purchased are their lives and their wealth. The price for this transaction is nothing less than Paradise itself.

From a logical perspective, this verse answers an important question: Why should believers follow divine commands and expend themselves and their wealth in Allah's path? The answer is that Allah has already purchased these things from us in exchange for Paradise. This establishes a binding contract between the Creator and His servants.

The verse elaborates that this purchase entails that believers "fight in the way of Allah, and kill and are killed." This does not merely refer to physical combat, but encompasses the broader spiritual struggle known as jihad, which includes striving against one's lower desires, standing firm for truth and justice, and defending one's faith and community when necessary.

What gives this divine transaction additional weight is that it is not a new covenant but one that has been consistently promised across sacred texts – the Torah, the Injil (Gospel), and the Quran. This continuity emphasizes the unified message of all prophets throughout history. Allah then poses a rhetorical question: "Who is more faithful to his covenant than Allah?" – reminding believers that this is the most secure transaction possible, guaranteed by the One who never breaks His promise.

The verse concludes with an exhortation to rejoice in this transaction, for it represents "the great achievement" (al-fawz al-'azīm). Unlike worldly transactions where material goods depreciate and eventually perish, this divine exchange offers eternal happiness.

In verse 112, Allah describes the qualities of those believers who have entered into this transaction:

This verse outlines the comprehensive character of true believers who have sold themselves to Allah. They are:

● At-Tā'ibūn (The Repentant): Those who consistently turn back to Allah in repentance

● Al-'Ābidūn (The Worshippers): Those devoted to worship

● Al-Hāmidūn (Those who praise): Those who constantly praise Allah

● As-Sā'ihūn (The Travelers): Those who journey in Allah's cause, which may refer to physical travel for knowledge, da'wah or other religious purposes

● Ar-Rāki'ūn and As-Sājidūn (Those who bow and prostrate): Those consistent in prayer

● Those who command the good and forbid the evil – a central responsibility of believers

● Those who protect the boundaries set by Allah by observing His commands and prohibitions

These characteristics represent the complete profile of a believer who has sold himself to Allah. The verse concludes with the divine instruction to "give good news to the believers" – a reminder that those who fulfill these qualities have reason for optimism and joy.