What is the core belief of Islam?

The core belief of Islam is the Shahada, the testimony that 'There is no deity worthy of worship except Allah, and Muhammad is His Messenger'. According to classical scholars, this indivisible statement establishes both the oneness of God (Tawhid) and the sole path of His guidance through the final Prophet ﷺ.

Can a person believe in God but not Prophet Muhammad in Islam?

According to the Quran (e.g., 4:136) and the consensus of Islamic scholars like Ibn Kathir, belief in Allah is incomplete and invalid without belief in His final Messenger, Muhammad ﷺ. The Quran presents them as an inseparable requirement for faith, as obedience to the Messenger is the practical test of obedience to Allah.

What is the first step to becoming a Muslim?

The first and most essential step to becoming a Muslim is to sincerely declare the testimony of faith, the Shahada: 'Ash-hadu an la ilaha illa Allah, wa ash-hadu anna Muhammadan Rasulullah'. This declaration, ideally before Muslim witnesses, affirms one's belief in Allah and His Messenger and marks one's entry into the faith of Islam.

Belief in Allah and His Messenger ﷺ: The Foundation of Islamic Faith

✦2 Subtopics

Belief in Allah and the Prophet ﷺ

At a Glance

According to the consensus of classical Islamic scholarship, the belief in Allah and His Messenger, Muhammad ﷺ (Al-Iman billahi wa Rasulihi), represents the indivisible cornerstone of the Islamic faith. Ibn Kathir, in his commentary on Quran 4:136, explains that Allah commands the believers to perfect their faith by affirming this dual creed, which is the foundation of all other pillars. This testimony, known as the Shahada, is not merely a verbal declaration but a profound covenant that necessitates both the absolute monotheistic worship of Allah alone (Tawhid) and the complete acceptance of the guidance brought by His final Prophet ﷺ. Al-Qurtubi's analysis further clarifies that obedience to the Messenger is the practical proof of obedience to Allah. The Quran defines true believers in Surah 49:15 as those who believe in Allah and His Messenger and then have no doubt, demonstrating that sincere, unwavering conviction is a prerequisite. This foundational belief is the entry point into Islam and the central axis around which a Muslim's entire spiritual and practical life revolves.

📖 Quranic Context

The inseparable twin-testimony (Shahada) that forms the absolute foundation of Islam and the first of its five pillars.

Establishes the covenant between a servant and Allah, where belief in the Creator necessitates acceptance of His chosen envoy for guidance.

💭 Theological Perspective

Considered a return to the innate disposition (Fitrah) to recognize the Creator and seek His guidance.

Forms the basis of a Muslim's identity, worldview, and moral compass.

It is the prerequisite for all other acts of worship and the key to salvation.

The starting point and continuous requirement for spiritual progression and closeness to Allah.

📜 Hadith Perspective

The Prophet Muhammad ﷺ defined Islam's foundation upon this belief in the famous Hadith of Jibril and the Hadith on the Five Pillars.

The Shahada being the key to Paradise.
The inseparability of the testimony.
Actions being judged based on the sincerity of this belief.

Universal agreement (Ijma) that this dual belief is the non-negotiable entry point into Islam.

💎 Deeper Insights

The command in Surah An-Nisa (4:136) 'O you who have believed, believe...' is a profound spiritual instruction. Ibn Kathir explains this isn't redundant; it's a command for believers to constantly renew, deepen, and perfect their faith. It transforms the Shahada from a one-time entry pass into a lifelong journey of increasing certainty and submission.

— Ibn Kathir

Surah Al-Hujurat (49:15) provides the ultimate litmus test for the sincerity of this belief: the absence of doubt and the willingness to strive with wealth and life. This verse effectively weaponizes the Shahada against hypocrisy, making it clear that true faith is not what is claimed by the tongue, but what is proven by conviction and sacrifice.

— Al-Jalalayn, Ibn Abbas

At a Glance

📖 Quranic Context

💭 Theological Perspective

📜 Hadith Perspective

💎 Deeper Insights

Related Topics

Subtopics (2)

Related Topics (4)