Is the Hadith, "Whoever says in the morning and in the evening: 'Allah is sufficient for me; there is no god but He. In Him I put my trust, and He is the Lord of the Mighty Throne,' seven times, Allah Most High will suffice him for what concerns him of the matters of this world and the Hereafter," authentic?

The hadith: "Whoever says in the morning and in the evening: 'Allah suffices me, there is no god but He; in Him I have placed my trust, and He is the Lord of the Magnificent Throne' seven times, Allah will suffice him for whatever concerns him," is a mawquf narration attributed to Abu Ad-Darda with a good chain of transmission. It holds the ruling of a marfu' (elevated) hadith, and it does not include the addition: "of the affairs of this world and the Hereafter."