9 verses have
about
in Edition Clear Qur'an by Talal Itani / Al-Kahf (The Cave)

18:21So it was, that We caused them to be discovered, that they would know that the promise of God is true, and that of the Hour there is no doubt. As they were disputing their case among themselves, they said, “Build over them a building.” Their Lord knows best about them. Those who prevailed over their case said, “We will set up over them a place of worship.”

18:22They will say, “Three, and their fourth being their dog.” And they will say, “Five, and their sixth being their dog,” guessing at the unknown. And they will say, “Seven, and their eighth being their dog.” Say, “My Lord knows best their number.” None knows them except a few. So do not argue concerning them except with an obvious argument, and do not consult any of them about them.

18:23And never say about anything, “I will do that tomorrow.”

18:61Then, when they reached the junction between them, they forgot about their fish. It found its way into the river, slipping away.

18:63He said, “Do you remember when we rested by the rock? I forgot about the fish. It was only the devil who made me forget it. And so it found its way to the river, amazingly.”

18:70He said, “If you follow me, do not ask me about anything, until I myself make mention of it to you.”

18:76He said, “If I ask you about anything after this, then do not keep company with me. You have received excuses from me.”

18:77So they set out. Until, when they reached the people of a town, they asked them for food, but they refused to offer them hospitality. There they found a wall about to collapse, and he repaired it. He said, “If you wanted, you could have obtained a payment for it.”

18:83And they ask you about Zul-Qarnain. Say, “I will tell you something about him.”