Were Umar ibn Al-Khattāb and Mu'awiya I alive at the same time?
Yes. Umar ibn Al-Khattāb and Mu'awiya I were alive at the same time for 40 or 41 years, from AD 603 to AD 644.
Mu'awiya I was 40 or 41 when Umar ibn Al-Khattāb died.
Yes. Umar ibn Al-Khattāb and Mu'awiya I were alive at the same time for 40 or 41 years, from AD 603 to AD 644.
Mu'awiya I was 40 or 41 when Umar ibn Al-Khattāb died.