Obasanjo said this at the 2018 Ibogun Day Celebration in Ogun State today.
As Head of State, Obasanjo had, in March 1976, appointed Buhari as the Federal Commissioner (position now called minister) for Petroleum and Natural Resources.
Obasanjo said, “I know Buhari and he, too, knows me. Till the day I die, Buhari will continue to address me as ‘Sir.'”