The Messenger of Allah ﷺ said, "Whoever says, 'There is no god but Allah alone, with no partner. To Him belongs the dominion, and to Him belongs all praise, and He has power over all things,' two hundred times each day, no one before him will have surpassed him, and no one after him will overtake him, except by doing better than his deed."
حدثنا حسن حدثنا حماد بن سلمة عن ثابت البناني وداود بن أبي هند
قال رسول الله ﷺ من قال لا إله إلا الله وحده لا شريك له له الملك وله الحمد وهو على كل شيء قدير مائتي مرة في كل يوم لم يسبقه أحد كان قبله ولا يدركه أحد بعده إلا بأفضل من عمله
Its isnad is sahih. Here Thabit Bunani narrated from Amr bin Shuayb, though he is older than him, as stated in Tahdhib. Haythami mentioned the hadith in Majma al-Zawaid 10:86, attributing it to Ahmad and Tabarani, and said, "The men of Ahmad's chain are reliable, and among the men of Tabarani's chain there is one I do not recognize." Munziri mentioned it in Targheeb wal-Tarheeb 2:258 and said, "Ahmad narrated it with a good isnad, and Tabarani as well."