Reference for Chullin 244:2

כל זמן שיונק

or Ulla meant 'Throughout its first year', whether it still was sucking or not, whereupon R'Johanan said to him, 'Throughout its first year and provided it was still sucking? ' - Come and hear: R'Johanan said: As long as it sucks' - Now if it were the case [that R'Johanan required both]<span class="x" onmousemove="('comment',' That it must be in its first year and also continue to suck.');">²</span>

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