Imam Ja‘far al-Ṣadiq (as): It is written in Torat: O san of Adam! Devote yourself exclusively to my worship and I will fill your heart with wealth and will not leave you to your need and it will be upon me to end your poverty, and fill your heart with awe of Me. However, if you do not devote yourself exclusively to my worship, I will fill your heart with preoccupation with this world, then I will not end your poverty and will leave you to your need. al-Kāfī