حُبُّ الدُّنْيَا رَأْسُ كُلِّ خَطِيئَةٍ
Love of worldly life is the root of every sin.
Source: Razin.
حُبُّ الدُّنْيَا is an iḍāfah phrase meaning “love of worldly life.” رَأْسُ literally means “head” but here describes a root or principal cause. كُلِّ خَطِيئَةٍ conveys “every error or sin.”
The warning concerns an attachment that drives a person to sacrifice truthfulness, trust, worship, or the rights of others. Permissible worldly things are not inherently condemned: the preceding report stresses earning through lawful means.
For example, deceiving a buyer simply to increase profit illustrates the harm of unchecked attachment.