Tanya Chapter 40 part 1

Acts of holiness naturally rise beyond this world. When someone studies Torah without the intention to connect to Hashem, then the study does not rise to become incorporated with the ten sefirot. But it does rise! Torah is essentially holy and so its natural place is in a place of holiness, in the spiritual worlds above ours. In fact, angels are created from these acts of holiness either in our world of Asiya, or in the world of Yetzirah. All this is true so long as there were no contrary intentions. However, if the study was motivated by selfish interest, it remains trapped below in this world.