The meaning of the clear horizon

1. We were told by my father, may Allah grant him mercy, that he said: We were told by Sa’d bin Abdullah, that he said: We were told by Musa bin Ja’far al-Baghdadi, from Muhammed bin Jumhour, from Abdullah bin Abdul-Rahman, from Muhammed bin Abi Hamza, from Abu Abdillah, peace be upon him, that he said: The one who says on every day of Sha’ban seventy times: «I seek forgiveness from Allah, whom there is no god but Him, the Merciful to all, the Mercifull in particular, the Living, the Superb Sustainer, and I repent to Him» it will be written for him in the clear horizon. He said