Al salamu alykom
Where can i download redhat 9.0 for free ?

You can download the ISO Images; the ISO images are located at the following URLs:

Red Hat Download - HTTP (http://ftp.redhat.com/pub/redhat/linux/9/en/iso/i386/)
Red Hat Download - FTP (ftp://ftp.redhat.com/pub/redhat/linux/9/en/iso/i386/)


You will need to download the following three ISOs:

shrike-i386-disc1.iso
shrike-i386-disc2.iso
shrike-i386-disc3.iso

You might need to consider mirror sites though.

Red Hat Mirrors - Link (http://www.redhat.com/download/mirror.html)