As for whoever sees in the recitation that it contains only Al-Fatihah, then because it is sufficient, then it is valid that he prayed. As for whoever adds the surah after Al-Fatihah, he should know the status that this characteristic has attained for him, because the surah with the s-sin is the status, Al-Nabigha said in his Mamdouh.

Have you not seen that God has given you a Surah *** without which you see every angel wavering?

You are the sun and the kings are stars. *** When you rise, no star appears from them.