Theophylact of Ohrid
Catena Aurea · Markusevangelium 11
And when even was come, he went out of the city. And in the morning, as they passed by, they saw the fig tree dried up from the roots. And Peter calling to remembrance saith unto him, Master, behold, the fig tree which thou cursedst is withered away. And Jesus answering saith unto them, Have faith in God. For verily I say unto you, That whosoever shall say unto this mountain, Be thou removed, and be thou cast into the sea; and shall not doubt in his heart, but shall believe that those things which he saith shall come to pass; he shall have whatsoever he saith. Therefore I say unto you, What things soever ye desire, when ye pray, believe that ye receive them, and ye shall have them. And when ye stand praying, forgive, if ye have ought against any: that your Father also which is in heaven may forgive you your trespasses. But if ye do not forgive, neither will your Father which is in heaven forgive your trespasses.
The greatness of the miracle appears in the drying up so juicy and green a tree. But though Matthew says that the fig tree was at once dried up, and that the disciples on seeing it wondered, there is no reason for perplexity, though Mark now says, that the disciples saw the fig tree dried up on the morrow; for what Matthew says must be understood to mean that they did not see it at once, but on the next day.