Reference for Bava Batra 304:1

בידוע שלא היה קנין אלא מחמת המיתה ואחוי ליה בידיה ואשתיק

because it is known that the [symbolic] acquisition took place<span class="x" onmousemove="('comment',' Cf. p. 656. n. 6. ');">¹</span> only on account of [his expectation of] death'!<span class="x" onmousemove="('comment',' From this it follows that if the testator did die the donee acquires possession after the death of the testator though a deed was written. How, then, could it be said in the name of Samuel that where a deed was written there can be no acquisition after death? ');">²</span> He answered him<span class="x" onmousemove="('comment',' LIt., 'showed.' 'told'. ');">³</span> by [a wave of] his hand and remained silent.<span class="x" onmousemove="('comment',' [Or 'he (Raba) remained silent', having understood what R. Nahman meant to signify by the wave of his hand.] ');">⁴</span>

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