Hello @Gautam Gulati Thank you for contacting us on Microsoft Q&A platform. Happy to answer any questions you may have!
I understand that you want to migrate your Azure resources from one tenant to another tenant. There is no direct way to move the resources across tenants.
Copying a response from an earlier discussion where our MVP has answered this question in detail.
You can transfer an entire subscription to another tenant (if it is not a CSP subscription) so an option here is to first move the resource group to another subscription first (a temporary subscription perhaps) https://learn.microsoft.com/en-us/azure/azure-resource-manager/management/move-resource-group-and-subscription and then move this subscription to the new tenant - https://learn.microsoft.com/en-us/azure/role-based-access-control/transfer-subscription
This is usually the easiest way assuming your resource types support a tenant/subscription move at all.
Reference URL - https://learn.microsoft.com/en-us/answers/questions/789973/move-resources-rg-from-one-subscription-to-another#answer-790352
Hope this helps. Please write back to us if you need any further assistance in this matter!
If the response helped, do "Accept Answer" and up-vote it