Mesorat%20hashas for Yoma 73:8

והא רישא ר"א בר"ש היא כולה ראב"י היא ותני בבין האולם ולמזבח

BEN KATIN MADE TWELVE SPIGOTS FOR THE LAVER,<span class="x" onmousemove="('comment',' The priests washed (sanctified) their hands and feet with the water of that laver, before entering the Sanctuary or preparing a service. They turned the spigots and the water came over their hands and feet.');">¹⁵</span> FOR THERE HAD BEEN BEFORE BUT TWO. HE ALSO MADE A MACHINE FOR THE LAVER, IN ORDER THAT ITS WATER SHOULD NOT BECOME UNFIT BY REMAINING OVERNIGHT.<span class="x" onmousemove="('comment',' The sacred vessels sanctify everything that comes in contact with them (Zeb. 86a) , and whatever has thus been sanctified becomes invalid by remaining overnight. Ben Katin's machine (**) connected the laver with the well, thus retaining for it the undisturbable freshness of the well, hence, when drawn up in the morning, by means of the wheel, it remained valid for sacred use. The heavy laver, until then, had to be filled every morning afresh, after being emptied of last night's water - a laborious, time-wasting effort.');">¹⁶</span>

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