Sound Certainty (Ḥusn al-Yaqīn): How It Dispels Worries and Builds Steadfastness

Introduction

It is narrated from the Commander of the Faithful, ʿAlī (peace be upon him): «اطْرَحْ عَنْكَ وَارِدَاتِ الْهُمُومِ بِعَزَائِمِ الصَّبْرِ وَحُسْنِ الْيَقِينِ» ʿUyūn al-Ḥikam, p. 84
“Cast off from yourself the worries that descend upon you through the resolve of patience and sound certainty.”

Over the course of life, a person faces worries and trials that never leave them. Yet the religious texts guide us to a clear way of overcoming them, embodied in two central qualities: patience and sound certainty (ḥusn al-yaqīn). The more firmly sound certainty takes root in a person’s heart, the more hardships turn from a crushing burden into a test that can be passed.

The noble narrations affirm that the foundation of the believer’s faith is sound certainty. This makes the study of its meaning, its domains and its effects an intellectual and formative necessity that touches human life in both its spiritual and its practical dimensions.

What Is Meant by Sound Certainty?

Faith, in its reality, is firm conviction, tranquillity of the soul and assent of the heart. Whoever knows God Almighty, His Prophet, and what God has made it obligatory for them to know, and affirms this, is a believer. Yet this state of faith is not of a single degree; rather, it varies as certainty varies in firmness and weakness.

Some of the friends of God (awliyāʾ) have reached lofty ranks of certainty, as is narrated from the Commander of the Faithful (peace be upon him):

«لو كُشف لي الغطاء ما ازددت يقينًا»
“Were the veil lifted for me, I would not increase in certainty.”

This shows that sound certainty is not merely an initial belief, but a station attained through striving and spiritual struggle, in which a person does not content themselves with the bare minimum of faith.

Certainty has multiple ranks, to which the Noble Qur’an clearly points:

• ʿIlm al-yaqīn (the knowledge of certainty)

• ʿAyn al-yaqīn (the eye of certainty)

• Ḥaqq al-yaqīn (the truth of certainty)

The Exalted says: ﴿كَلَّا لَوْ تَعْلَمُونَ عِلْمَ الْيَقِينِ ۝ لَتَرَوُنَّ الْجَحِيمَ ۝ ثُمَّ لَتَرَوُنَّهَا عَيْنَ الْيَقِينِ﴾
“Nay! Were you to know with the knowledge of certainty, you would surely see Hellfire; then you would surely see it with the eye of certainty.”
And He, glorified be He, says: ﴿إِنَّ هَذَا لَهُوَ حَقُّ الْيَقِينِ﴾
“Indeed, this is the very truth of certainty.”

The Domains of Sound Certainty and Its Importance

Scholars have spoken of many domains of sound certainty and of its profound effects in shaping the human being. Here we point to two fundamental ones:

Sound Certainty Is the Head and Pillar of Religion