Celtic's Scottish Cup quarter-final against Inverness Caledonian Thistle was postponed on Sunday due to a waterlogged pitch.
Celtic manager Neil Lennon and Rangers assistant manager Ally McCoist have been charged with misconduct following the Scottish Cup fifth round replay between the two sides on March 2, the Scottish FA have announced.
Scottish Football Association chief executive Stewart Regan has condemned "the inflammatory and irresponsible behaviour'' in Celtic's 1-0 win over Rangers in Wednesday night's Scottish Cup fifth-round replay at Celtic Park, and confirmed an investigation has been launched into all incidents.
Neil Lennon played down the prospect of winning a domestic treble ahead of Wednesday's Scottish Cup fifth-round replay against Old Firm rivals Rangers at Parkhead - but is determined to carry on the fight on all three fronts.
Rangers assistant manager Ally McCoist insists their 3-0 defeat against Celtic ten days ago could prove to be a blessing in disguise as they prepare to take on their rivals again.
Neil Lennon described his Celtic side as ''absolutely brilliant'' after the Hoops twice came from behind to draw 2-2 with Rangers in the most dramatic of Scottish Cup fifth-round ties at Ibrox.
East Stirlingshire have been expelled from the Scottish Cup after fielding an ineligible player in their fourth-round win over Buckie Thistle.
Greenock Morton booked themselves an away trip to Inverness after a goal-packed 5-2 win in their Scottish FA Cup fourth round replay at Airdrie United.
Second Division side Ayr snatched a spot in the fifth round of the FA Cup by claiming a shock triumph over Hibernian at Somerset Park.
Rangers and Celtic will meet at Ibrox in the fifth round of the Scottish Cup.