Reference for Chullin 275:38

א"ר חסדא

Raba said to him: But did not the Master himself say: 'Provided the owner of the field had begun to reap'?<span class="x" onmousemove="('comment',' I.e., he had begun to gather in the fruits before he had sold any of the trees; in that case the duty of the 'Corner' lay upon him in respect of the entire field.');"><sup>27</sup></span>