If you have a moment to spare...

Meaning

A polite way to begin a request, suggesting it won't take long.

Examples

• John: <b>If you have a moment to spare</b>, could you sign this form?
• Alice: Sure, let me just finish this quickly.
• John: Thank you. <b>If you have a moment to spare</b>, could you explain the process?
• Alice: Certainly. Let me walk you through it.