This story about Jesus seeing the fig tree can be found in Matthew, chapter 21:19. Luke, chapter 13:6-9, also has a parable about a fig tree that would not bear fruit. The stories in Matthew and Mark are slightly different. Mark said that Jesus saw a fig tree from a distance (καὶ ἰδὼν συκῆν ἀπὸ μακρόθεν), not by the side of the road, as in Matthew. This fig tree had leafy branches (ἔχουσαν φύλλα). Jesus went to see if he could find any fruit on it (ἦλθεν εἰ ἄρα τι εὑρήσει ἐν αὐτῇ). When he came over to the tree (καὶ ἐλθὼν ἐπ’ αὐτὴν), he found no fruit (οὐδὲν εὗρεν), only leaves (εἰ μὴ φύλλα), the same as Matthew had indicated. However, here Mark pointed out that it was not the season for figs (ὁ γὰρ καιρὸς οὐκ ἦν σύκων).
καὶ πάντα ὅσα ἂν αἰτήσητε ἐν τῇ προσευχῇ πιστεύοντες λήμψεσθε.
This Jesus saying about faith can be found in Mark, chapter 11:20-24, word for word, but it was the next day after the curse, not the same day. Jesus answered the disciple’s question (ἀποκριθεὶς δὲ ὁ Ἰησοῦς εἶπεν αὐτοῖς) about how the fig tree withered with a solemn pronouncement (Ἀμὴν λέγω ὑμῖν) about the importance of faith. If they had faith (ἐὰν ἔχητε πίστιν) and did not doubt (καὶ μὴ διακριθῆτε), they too would be able to effectively curse a fig tree (οὐ μόνον τὸ τῆς συκῆς ποιήσετε). Not only that, but if they had faith, they could move mountains. They could tell a mountain (ἀλλὰ κἂν τῷ ὄρει τούτῳ εἴπητε) to be lifted up or taken away (Ἄρθητι) and thrown into the sea (καὶ βλήθητι εἰς τὴν θάλασσαν), and it would happen (γενήσεται). Whatever they asked for in believing prayer (καὶ πάντα ὅσα ἂν αἰτήσητε ἐν τῇ προσευχῇ πιστεύοντες), they would receive it (λήμψεσθε). The essential ingredient of effective prayer was faith.