Indeed the servant in this life may be afflicted with various types of pain, and it is possible that numerous events may cause restlessness to his heart, bring pain to his soul and result in him suffering from irritation and worry.
If the pain that afflicts the heart is connected with affairs from the past then it is sadness.
If it is connected with affairs of the future, then it is anxiety.
If it is connected to something that the individual is currently experiencing and going through, then it is grief.
These three affairs: sadness, anxiety, and grief, are removed from the heart and they vanish from it by truly returning to Allāh, [having] complete humility, subservience, submissiveness to Him – Glorified be He – and surrender to His command. [Likewise, having] belief in His Decree and Preordainment, knowledge of Him – Glorified be He – and knowledge of His Names and Attributes.
This is achieved through belief in His Books, and being diligent to recite it, contemplate over it, and act upon that which is within it.
This is the only way – and there is no other way – for these things to disappear, for the breast to be content, and happiness to be attained.
Book: Explanation of the Supplications for the Sick and Afflicted By Shaykh Abdur Razzaq Ibn Abdul Muhsin Al-Abbaad P. 55
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