Reference for Gittin 152:7

תניא כוותיה דר' יוחנן ה"ז גיטך כל זמן שאעבור מנגד פניך שלשים יום והיה הולך ובא הולך ובא הואיל ולא נתייחד עמה ה"ז גט ולגט ישן אין חוששין שהרי לא נתייחד עמה

— R. Huna replied: What is meant by 'PRESENCE here? Marital intercourse. And why is it called PRESENCE'? A polite expression is used. R. Johanan, however, said: The word 'PRESENCE is to be taken literally. For it does not say that [if he comes and goes] she is divorced, but 'THE GET IS VALID', that is to Say, it does not become an 'old' Get<span class="x" onmousemove="('comment',' A Get is called 'old' if after it was written the husband and wife were closeted together. Such a Get is invalid. V. infra 79b. ');">⁵</span>

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