It was narrated by Anas, may Allah be pleased with him, that the Holy Prophet (saw) said: "Whoever reads Recites Surah Ikhlas 100,00 times would have bought himself from Allah, and a caller from Allah will announce in heaven and on earth: 'verily, so-and-so has been set free by Allah, so whoever owes him anything, let him claim it from Allah.” Is this hadith correct? If so, in which hadith book?
بسم الله الرحمن الرحيم
Lots of virtues have been reported about Surah Ikhlas in Sahih and Dhaif Hadiths, but we could not be able to find the Hadith which you wrote.
Allah knows Best!
Darul Uloom Deoband