6 verses have
So
in Edition Clear Qur'an by Talal Itani / Ad-Dukhaan (The Smoke)

44:10So watch out for the Day when the sky produces a visible smoke.

44:28So it was; and We passed it on to another people.

44:40The Day of Sorting Out is the appointed time for them all.

44:54So it is, and We will wed them to lovely companions.

44:58We made it easy in your language, so that they may remember.

44:59So wait and watch. They too are waiting and watching.