"Whoever attempts great endeavors stands in need of six things: Knowledge, Divine Success (Tawfeeq), Opportunity, Helpers, Refinement (Adab), and Diligence."

And these six are paired together:

• Sound Judgment & Refinement (Adab) form a pair: Judgment is incomplete without refinement, and refinement is incomplete without sound judgment.
• Helpers & Opportunity form a pair: Helpers are of no avail except when opportunity strikes, and opportunity cannot be seized without helpers.
• Divine Success & Diligence form a pair: Diligence is the catalyst for success, and through divine success, diligence yields fruit.

— Ibn al-Muqaffa