Reference for Gittin 4:6

אימור דאמרינן עד אחד נאמן באיסורין כגון חתיכה ספק של חלב ספק של שומן דלא איתחזק איסורא

Seeing that Rabbah's reason is that Jews abroad are ignorant of the rule of 'special intention', why does he not require that the Get should be brought by two bearers, so as to bring this case into line with the general rule of the Torah regarding evidence?<span class="x" onmousemove="('comment',' By the mouth of two witnesses a matter shall be established, Deut. XIX, 15. ');">⁶</span>

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