Reference for Bava Batra 269:8

אימא סיפא נפלו לו נכסים ממקום אחר יירשו אחיו עמו הא אמרי ליה לאו אחונא הוא

it is known that he has no brothers, and secondly<span class="x" onmousemove="('comment',' Lit., 'and again, surely'. ');">¹⁴</span> he [himself] has declared at the time of his death that he had none. Abaye said to him: But [people] say that in the countries beyond the sea<span class="x" onmousemove="('comment',' Lit., 'country of the sea'. ');">¹⁵</span>

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