Zaid Alsalami, Shaykh Dr Zaid Alsalami is an Iraqi born scholar, raised in Australia. He obtained a BA from Al-Mustafa University, Qom, and an MA from the Islamic College in London. He also obtained a PhD from... Answered 4 years ago
Bismihi ta'ala
From the sources, it seems that Harun (a.s.) was older than Musa (a.s.).
And Allah knows best.