Atiku Abubakar, presidential candidate of the PDP had petitioned the tribunal, praying he be declared the winner of the February 23 exercise.
The governor was fingered as the arrowhead of the plan when he gave his assent the bill on Thursday.
He stated this while reacting to the current travails of Lamido Sanusi, the embattled emir of Kano, who watched helplessly while his domain was balkanized in a bid to whittle down his influence in the state.
Omokri who described himself as a critic of the president said Buhari ought to be commended when he governs well.
Security situation in the country, especially in the Northern part, had recently worsen with killings, kidnappings among other crimes on the rise.
The letter was sent by Mr Buhari and read out during plenary on Thursday.
The former CBN governor was crowned emir mid 2014 by Rabiu Kwankwaso, then governor of Kano State and a key figure who kicked against the re-election of Jonathan.
Messrs Okorocha and Oshiomhole are politically at war with themselves.
Accusing the EFCC of witch-hunting him, Saraki queried why he is the only former governor the commission is always interested in probing.
The tribunal gave the prohibition on Wednesday during its official inaugural setting in Abuja.