Reference for Keritot 55:39

והעשיר

too, [we will say that] he had already designated it when he set apart [the money].<span class="x" onmousemove="('comment',' According to Rab Hisda the Baraitha required a further correction to imply that the designation was made not only before this man became rich but actually at the very moment when the money was set apart. This period is equivalent to the time of purchase, and therefore the designation is effective in accordance with Rab Hisda's ruling.');">³⁰</span>

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