Reference for Bava Batra 193:7

הקדש אהקדש לא קשיא כאן בקדושת הגוף כאן בקדושת דמים מעשר אמעשר נמי לא קשיא כאן במעשר ודאי כאן במעשר דמאי

[but] the second is permitted. R. Meir says: The second [infusion is] also [forbidden] when [it contains enough of the wine] to impart a flavour [to the water]. And [in the case] of consecrated [lees], the third [infusion] is forbidden, but the fourth is permitted. R. Meir says: The fourth [infusion is] also [forbidden] when [it contains enough of the wine] to impart a flavour [to it]. A contradiction was pointed out [from a Baraitha which states that infusions] of consecrated [things] are forever<span class="x" onmousemove="('comment',' Even the fourth, etc. ');">¹²</span>

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