"In astrophysics, gravitational redshift or Einstein shift is the process by which electromagnetic radiation originating from a source that is in gravitational field is reduced in frequency, or redshifted, when observed in a region of a weaker gravitational field. This is a DIRECT RESULT OF GRAVITATIONAL TIME DILATION."

https://educalingo.com/en/dic-en/einstein-shift
A blatant lie universally taught in Einstein's schizophrenic world. The gravitational redshift (or blueshift) is a direct result of the variation of the speed of light as predicted by Newton's theory. In a gravitational field, the speed of light varies like the speed of ordinary projectiles, and the frequency varies proportionally. This is so obvious that even Einsteinians confirm it sometimes:

Max Planck Institute for Gravitational Physics : "You do not need general relativity to derive the correct prediction for the gravitational redshift. A combination of Newtonian gravity, a particle theory of light, and the weak equivalence principle (gravitating mass equals inertial mass) suffices...The gravitational redshift was first measured on earth in 1960-65 by Pound, Rebka, and Snider."

http://www.einstein-online.info/spotlights/redshift_white_dwarfs.html
Banesh Hoffmann (p. 139): "The gravitational red shift does not arise from changes in the intrinsic rates of clocks. It arises from what befalls light signals as they traverse space and time in the presence of gravitation."

http://www.amazon.com/Relativity-Its-Roots-Banesh-Hoffmann/dp/0486406768
James Hartle, Gravity: An Introduction to Einstein's General Relativity, p. 113: "If we accept the equivalence principle, we must also accept that light falls in a gravitational field with the same acceleration as material bodies."

https://www.amazon.com/Gravity-Introduction-Einsteins-General-Relativity/dp/0805386629
Paul A. Tipler, Ralph A. Llewellyn, Modern Physics: "But according to the equivalence principle, there is no way to distinguish between an accelerating compartment and one with uniform velocity in a uniform gravitational field. We conclude, therefore, that A BEAM OF LIGHT WILL ACCELERATE IN A GRAVITATIONAL FIELD AS DO OBJECTS WITH REST MASS. For example, near the surface of Earth light will fall with acceleration 9.8 m/s^2."

http://web.pdx.edu/~pmoeck/books/Tipler_Llewellyn.pdf
University of Illinois at Urbana-Champaign: "Consider a falling object. Its speed increases as it is falling. Hence, if we were to associate a frequency with that object the frequency should increase accordingly as it falls to earth. Because of the equivalence between gravitational and inertial mass, we should observe the same effect for light. So lets shine a light beam from the top of a very tall building. If we can measure the frequency shift as the light beam descends the building, we should be able to discern how gravity affects a falling light beam. This was done by Pound and Rebka in 1960. They shone a light from the top of the Jefferson tower at Harvard and measured the frequency shift. The frequency shift was tiny but in agreement with the theoretical prediction."

https://courses.physics.illinois.edu/phys419/sp2011/lectures/Lecture13/L13r.html