Reference for Rosh Hashanah 49:2

ועוד באו שנים ואמרו ראינוהו בזמנו ובליל עיבורו לא נראה וקיבלן ר"ג

ON ANOTHER OCCASION TWO WITNESSES CAME AND SAID, WE SAW IT AT ITS PROPER TIME,<span class="x" onmousemove="('comment',' Apparently this must have been on the thirtieth day shortly before nightfall.');">³</span> BUT ON THE NIGHT WHICH SHOULD HAVE BEEN NEW MOON<span class="x" onmousemove="('comment',' Lit., 'the night of its carry-over', i.e., after the nightfall with which the thirty-first day begins, when it should have been clearly visible.');">⁴</span> IT WAS NOT SEEN, AND RABBAN GAMALIEL [HAD ALREADY] ACCEPTED THEIR EVIDENCE.<span class="x" onmousemove="('comment',' And declared the thirtieth day New Moon.');">⁵</span>

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