It's from the Surat Taha (found from simple Google search, but also indicated by the first two Muqattaat letters), https://en.wikipedia.org/wiki/Ta-Ha https://e

It's from the Surat Taha (found from simple Google search, but also indicated by the first two Muqattaat letters), https://en.wikipedia.org/wiki/Ta-Ha https://en.wikipedia.org/wiki/Ta-Ha. BTW, the search for the meaning of these letters that appear in a small percentage of suras is interesting: https://en.wikipedia.org/wiki/Muqatta%27at https://en.wikipedia.org/wiki/Muqatta%27at