as far as i know these should be the details:

1. duration (i.e. how many months, starting from when until what date)
2. Full name (written in passport)
3. Passport information (passport no., place of issue, date of expiry, nationality)

Note:
it should be addressed to "The Consulate General, State of Qatar"
should be printed in company letterhead, signature of authorized signatory and company stamp