If I have spent time learning, but that knowledge hasn’t gotten me closer to Allah SWT, then I have wasted my time in learning.
If I have spent time learning, but that knowledge hasn’t made me be in service with ultimate love and respect to my parents, then I have wasted my time in learning.
If I have spent time learning, but that knowledge hasn’t changed me, then I know, for sure, that I have wasted my time in learning….