Layla-tul-Qadr is better than Alfi shahr. What does Alfi shahr mean?

"Layla-tul-Qadr" is better than "Alfi shahr". What does "Alfi shahr" mean?

"Layla-tul-Qadr" is better than "Alfi shahr". What does "Alfi shahr" mean?

• 1000 nights
• 10 days
• 1000 months
• 1000 weeks

ANSWER 

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• 1000 months