The president wrote the Senate and House of Representatives on Monday to inform them of his resumption.

“I resumed work today. I've formally transmitted letters to @NGRSenate & @HouseNGR, in compliance with S145 of the amended 1999 Constitution,” Buhari said.

“As I settle down to work, first things first—I received a briefing from Vice President @ProfOsinbajo,” he added.

Buhari was originally meant to spend 10 days on leave but he wrote the Senate on February 5 to extend his vacation indefinitely.

The president said at the time that he would not be able to return until his doctors ruled out certain factors.

Upon his return, the president confessed that he had never been so sick in his entire life.

ALSO READ: "We have to trust our doctors more," Buhari tells Nigerians

Meanwhile, Buhari has said that he might have to return to London for follow-up treatment in a matter of weeks.