Discussed in "An Introduction to Metaphysics", page 136. The standard translation is introduced:
thinking and being are the same
then on p. 145, Heidegger offers:
there is a reciprocal bond between apprehension and being
In "What Is Called Thinking", page 241, it becomes
for the same: taking-to-heart is so also presence of what is present
It is mentioned with the standard translation in "The Basic Problems of Phenomenology", page 312.