6 verses have
truth
in Edition Clear Qur'an by Talal Itani / Yusuf (Joseph)

12:17They said, “O father, we went off racing one another, and left Joseph by our belongings; and the wolf ate him. But you will not believe us, even though we are being truthful.”

12:26He said, “It was she who tried to seduce me.” A witness from her household suggested: “If his shirt is torn from the front: then she has told the truth, and he is the liar.

12:27But if his shirt is torn from the back: then she has lied, and he is the truthful.”

12:46“Joseph, O man of truth, inform us concerning seven fat cows being eaten by seven lean ones, and seven green spikes, and others dried up, so that I may return to the people, so that they may know.”

12:51He said, “What was the matter with you, women, when you tried to seduce Joseph?” They said, “God forbid! We knew of no evil committed by him.” The governor’s wife then said, “Now the truth is out. It was I who tried to seduce him, and he is telling the truth.”

12:82“Ask the town where we were, and the caravan in which we came. We are being truthful.”