Reference for Bava Batra 220:11

אין הכי נמי וכי איתמר דרבה לענין יבום איתמר:

If you like, I can say, [the law of the son's precedence] may be inferred from here: <i>And ye may make them an inheritance for your sons<span class="x" onmousemove="('comment',' [H] is rendered here 'sons', though it may also bear the meaning of 'children'. ');">²¹</span></i> after you,<span class="x" onmousemove="('comment',' Lev. XXV, 46. ');">²²</span>

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