Muhammad Ali's ex-wife says Donald Trump is wasting his time if he's considering pardoning the legendary boxer ... telling TMZ Sports he should focus his energy on the LIVING!
We spoke with Khalilah Ali -- who was married to Muhammad from '67 to '76 -- and she was shocked when she watched Trump tell the media he was considering pardoning Ali ... presumably for his conviction for resisting the draft in 1971.
That conviction was overturned by the Supreme Court ... so, as Khalilah pointed out, "There's no necessary need for a pardon.