Ferdinand insists United are taking nothing for granted despite a 2-0 triumph against Schalke in the Champions League semi-finals.
"We'll wait and see," he told MUTV. "We won't count our eggs too soon. We know that teams can peg you back. There's quality in all sides at this stage of the competition. Players like Raul are quality so you can't take anything for granted."
The shut-out record is not in the centre-back's thoughts as he focuses on completing the job in the second leg.
"It all counts for nothing if you don't get there, or if you get there and you don't win," he explained. "We need to make sure we continue the way we're playing and when we take Schalke back to Old Trafford, we play the same way we did here and then hopefully get through to the final."