Soncino Translation:
Mishna: ... ‘WE GIVE THANKS, WE GIVE THANKS’ (In the ‘Amidah prayer.), HE IS SILENCED.
Gemara: ... because he seems to be addressing two Powers ... R. Zera said: For one to say, ‘Hear, Hear’, is like saying, ‘We give thanks, we give thanks’... Said R. Papa to him: But perhaps [the reason why he repeats] is because at first he was not thinking of what he said, and now he does think? — He replied: Is he to treat heaven like an ordinary acquaintance? If he does not think of what he is saying, I will hit him with a hammer till he does think.
