If God wills it. In Dubai, osmosis has made it everyone's word — Lebanese, Indian, British, Filipino speakers alike. What it actually means depends entirely on delivery:

• ·Eye contact and a smile → yes, it's happening
• ·Quick and cheerful → probably, confirm the day before
• ·Slight shrug → genuine uncertainty, have a backup plan
• ·Without looking up → polite no, don't push it
• ·Long pause before it → no, move on

The plumber says he'll be there tomorrow. "Yes, inshallah." Expect him between 10am and Thursday.