2 verses have
when
in Edition Clear Qur'an by Talal Itani / Al-Fath (The Victory)

48:15Those who lagged behind will say when you depart to collect the gains, “Let us follow you.” They want to change the Word of God. Say, “You will not follow us; God has said so before.” Then they will say, “But you are jealous of us.” In fact, they understand only a little.

48:18God was pleased with the believers, when they pledged allegiance to you under the tree. He knew what was in their hearts, and sent down serenity upon them, and rewarded them with an imminent conquest.