"The souls rejoice and the chests expand. However, once they have had their share of it, their hearts go back to a state of wonder, made vulnerable by anxiety and worry, overwhelmed by fear and separation. The skins shiver from it and the hearts become unsettled."— Al-Khaṭṭābī
"It was the Noble Qur'an alone which instilled faith in both adults and children, and spread emān as a general source of spiritual life. The one who brought forth this Qur'an was an illiterate man who had no state, no authority, no government, no army, and did so without inflicting persecution or compulsion. It was embraced out of conviction, volition, satisfaction, and submission: 'There is no compulsion in religion; the right path has become distinct from deviance.'"
"There is nothing more beneficial for the heart than reciting the Qur'ān with contemplation and reflection. It is the source of love, longing, fear, hope, repentance, reliance, contentment, submission, gratitude, patience, and all other states that bring life and perfection to the heart."— Ibn al-Qayyim (d. 751 H)

"What illness then remains in light of these successful and lofty cures, which are the remedy of the Mighty, Wise, Merciful Lord who is more merciful to His servants than a mother to her child? So blessed be Allah, the Lord of the Worlds!"— Al-Sa'dī