There is no authentic evidence in the Quran or Sunnah that identifies one specific dua as the "fastest" for obtaining provision. However, Islam teaches several authentic supplications for sustenance while emphasizing that provision comes from Allah alone through sincere prayer, lawful effort, trust in Him, and seeking forgiveness.

Best Authentic Duas for Provision

• O Allah, suffice me with what You have made lawful instead of what You have forbidden, and enrich me through Your bounty from all besides You.
• O Allah, I seek refuge in You from anxiety, sorrow, weakness, laziness, miserliness, cowardice, the burden of debt, and being overpowered by people.

Keys to Increasing Rizq

• Frequent Istighfar (seeking forgiveness).
• Taqwa (God-consciousness).
• Trust in Allah (Tawakkul).
• Maintaining family ties.
• Giving charity.
• Seeking lawful earnings through honest work.

Is there a dua that guarantees quick wealth?
No authentic Islamic source guarantees immediate wealth through a specific dua.

What is the best dua for provision?
The authentic supplication: "O Allah, suffice me with what You have made lawful instead of what You have forbidden, and enrich me through Your bounty from all besides You."

Does Istighfar increase sustenance?
Yes. The Quran links seeking forgiveness with blessings and increased provision.

Is charity a reason for more rizq?
Yes. Charity is one of the greatest causes of blessings and increase in wealth.

Should I only make dua for rizq?
No. Islam encourages combining sincere supplication with lawful effort and trust in Allah.