Mahdism constitutes one of the foundational principles of Shia thought. In the teachings of Amir al-Muminin (peace be upon him), the continuity of divine authority, the doctrine of the Twelve Imams, and the unique status of Imam al-Mahdi (may God hasten his reappearance) are clearly articulated. What follows is a presentation of the statements of the Commander of the Faithful concerning the affirmation of Mahdism.
The Earth Is Never Devoid of a Divine Proof
One of the central themes repeatedly emphasized by the Prophet of Islam and the Pure Imams (peace be upon them) is that the earth is never left without God’s proof (Imam). Numerous narrations affirm this principle.
From the perspective of Islamic belief, there has never been—and never will be—a time when creation exists without an Imam, a guide, and a divinely appointed intermediary between humanity and God. This principle is explicitly emphasized in the words of Amir al-Muminin (peace be upon him).
He said:
“O God! You must always have upon Your earth a proof for Your servants, guiding them to Your religion and teaching them Your knowledge, so that Your proof is not rendered void and the followers of Your friends do not go astray after having been guided. That proof is either manifest and obeyed by none, or concealed and awaited. Even if his person is hidden from people while guiding them, his knowledge and teachings remain firmly rooted in the hearts of the lovers of truth, who adhere to them and act upon them.”
Imam Ali (peace be upon him) also states in Nahj al-Balagha:
“Yes, O God, the earth shall never be devoid of one who rises with God’s proof—either openly known or hidden in fear—so that God’s clear proofs and signs may not be nullified. Though they may be few in number, they are great in rank before God. Through them, God preserves His proofs and entrusts them to those like themselves… They are God’s vicegerents upon His earth and callers to His religion.”
These blessed words emphasize that, at times, circumstances necessitate the concealment of the divine proof from public sight, depriving people of direct access to him. This reality lies at the heart of the doctrine upheld by the Ahl al-Bayt.
Imam Jafar al-Sadiq (peace be upon him) said:
“If the world were to remain without an Imam, even for a moment, it would collapse.”
Imam Muhammad al-Baqir (peace be upon him) likewise stated:
“If the divine proof were removed from the earth for even a moment, the earth would surge and convulse like a stormy sea.”
From these teachings—particularly the words of Amir al-Muminin (peace be upon him)—it becomes evident that the existence of Imam al-Mahdi (may God hasten his noble reappearance) as the divine proof and the continuation of God’s vicegerency on earth is an undeniable necessity and a definitive truth within the order of creation. The Perfect Human Being serves as the conduit of divine grace, through whom existence itself receives God’s sustaining mercy.
A Light That Never Sets
This group of narrations, expressed through vivid metaphor yet unmistakable clarity, affirms the uninterrupted continuation of divine guidance within the Muslim community after the Prophet Muhammad (peace be upon him and his family) and establishes the Ahl al-Bayt as its perpetual guides.
Imam Ali (peace be upon him) states in Nahj al-Balagha:
“Be aware that the example of the family of Muhammad (peace be upon him and his family) is like the stars in the sky: whenever one star sets, another rises.”
This comparison offers a powerful image of the continuity of Imamate and the eternal presence of divine guidance—a light that never fades, but manifests anew with each succeeding Imam.
The Commander of the Faithful also said:
“After the Prophet, there shall be twelve just Imams for this nation. The opposition of adversaries will not harm them.”
In another narration, he said:
“O Haruni! After Muhammad (peace be upon him and his family), there will be twelve just Imams, whom the efforts of those who seek to abase them will never harm.”
This emphasis on the twelve just Imams underscores that Imamate is a divinely ordained institution, immune to hostility and opposition, and destined to endure by God’s will until the complete realization of guidance for humanity.
Mahdism in the Quran Through the Lens of Amir al-Muminin (peace be upon him)
The belief in Imam al-Mahdi (may God hasten his noble reappearance) is a foundational element of Islamic thought, deeply rooted in the verses of the Holy Quran. Concepts such as the ultimate triumph of truth, the inheritance of the earth by the righteous, the leadership of the oppressed, and the full realization of divine justice form a clear Quranic framework for belief in the divinely guided savior.
The interpretations of these verses found in the narrations of the Ahl al-Bayt—particularly those of Amir al-Muminin (peace be upon him)—demonstrate that the Quran, through its profound and forward-looking discourse, prepares humanity to understand the role and mission of Imam al-Mahdi (may God hasten his noble reappearance) in the course of human history.
In his interpretation of Surah al-Nur, Amir al-Muminin (peace be upon him) explained the concept of Imamate as follows:
“The Light is the Quran, and Light is also one of the names of God, Exalted and Sublime. God says in Surah al-Nur: ‘God is the Light of the heavens and the earth…’”
He then said:
“The niche is the Messenger of God (peace be upon him and his family), the lamp is the successor and the successors, the glass is Fatimah al-Zahra (peace be upon her), and the radiant star is the Awaited Qaim (may God hasten his reappearance), who shall fill the earth with justice and equity.”
In his interpretation of Surah al-Qasas, Amir al-Muminin (peace be upon him) explained the Quranic promise concerning Imam al-Mahdi (may God hasten his reappearance) in the End Times:
“The oppressed ones mentioned in the Quran, whom God has promised to appoint as leaders, are we, the Ahl al-Bayt. God will raise our Mahdi in the End Times to grant them honor and to humiliate their enemies.”
A careful study of the words of Amir al-Muminin (peace be upon him) clearly demonstrates that Mahdism is a firm and deeply rooted truth within the Islamic belief system, inseparably linked to the divine tradition that the earth is never devoid of God’s proof. Through affirming the continuity of Imamate, identifying the twelve just Imams, and interpreting key Quranic verses, Imam (peace be upon him) illuminates the position of Imam al-Mahdi (may God hasten his reappearance) as the final link in the chain of divine guidance.
Accordingly, awaiting relief is not merely an inner spiritual state, but a conscious belief in the fulfillment of God’s definitive promises and an active readiness for the establishment of ultimate justice on earth—a promise that shall reach its perfection through the appearance of the Master of the Age, Imam al-Mahdi (may God hasten his reappearance).
