Reference for Zevachim 128:9

ונעביד מעילאי והדר נעביד מתתאי אמר רבא מי כתיב ימצה ימצה כתיב דממילא משמע

The lower wall.<span class="x" onmousemove="('comment',' For if he sprinkled it on the upper wall, it might drain on to the terrace, not on to the base.');">¹⁴</span> Yet let us [first perform it above, and then below?<span class="x" onmousemove="('comment',' I.e., sprinkle the blood on the upper wall, and then drain out the rest on the lower.');">¹⁵</span> - Said Raba: Is then yamzeh [he shall drain] written?

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