Possible Clues:

• Pilgrims to Mecca
• Returnees from Mecca
• They've been to Mecca
• Some once-a-year travelers
• Ones who've traveled to Mecca
• Some who celebrate Eid al-Adha in Mecca
• Mecca visitors
• Some pilgrims
• Muslim pilgrims
• Those having made the journey to Mecca