From the e-mail they sent me:
Dear Applicant,
We would like to inform you that your processed passport has been dispatched from the Canada Visa Office, on 30 Mar 2016 to the Canada Visa Application Centre.
You can track the status of your application through our website mentioned below using your tracking number.
Tracking Number:xxxxxxxxxxxx
http://www.vfsglobal.ca/canada
Congrats again and thank you for the info. Godbless to your next journey. Hope our passport will return soon. Its been more than 3 weeks.
Best Regards,
MUSCAT VAC
Level 1,
Tilal Complex,
Muscat Grand Mall,
Al Khuwair,
Muscat, Oman