As direct download links may change or expire, I recommend using the Cisco website to download the image. However, if you're looking for a direct link, you can try:
Please note that this link might not work if you're not logged in or if the link has expired.
https://software.cisco.com/download/navigator.do?keyType=Software%20Center&ft=1&url=/softwarecenter/release/nxos/7.0.3.I7.9/nxos.7.0.3.I7.9.bin Nxos.7.0.3.i7.9.bin Download--
When you're ready to install or upgrade, refer to the Cisco Nexus Installation and Upgrade Guide for detailed instructions.
Nxos.7.0.3.i7.9.bin is a specific version of the Cisco Nexus operating system. If you're looking to download this image, you're likely a network administrator or engineer working with Cisco Nexus switches. Here's what you need to know: As direct download links may change or expire,
md5 nxos.7.0.3.i7.9.bin
After downloading the image, verify the MD5 checksum to ensure the file integrity: Nxos.7.0.3.i7.9.bin Download--
Compare the output with the MD5 checksum provided on the Cisco download page.