Is it true that whoever recites Surat Al-Ikhlas a thousand times will have the sins of a hundred years forgiven and enter Paradise with the People of the Right Hand, and is this a sound hadith?

There is no authentic hadith from the Prophet, peace and blessings be upon him, regarding the virtue of reciting "Qul Huwa Allahu Ahad" (Say: He is Allah, the One) a thousand times. Everything narrated concerning this is very weak.