Chullin 212
עד הפרק קידוש ידים ורגלים במקדש עד הפרק וכל דבר שחוצץ בטבילה בגוף חוצץ בנטילת ידים לחולין ובקידוש ידים ורגלים במקדש
up to the joint;<span class="x" onmousemove="('comment',' The third joint of the fingers. i.e., the junction of the phalanges and the metacarpus.');"><sup>1</sup></span>
ושמואל אמר
Whatsoever is deemed to be an interposition with regard to the immersion of the body<span class="x" onmousemove="('comment',' Anything that adheres to the body and so prevents the water of the mikweh from penetrating to that part of the body renders the immersion invalid.');"><sup>4</sup></span>
עד כאן בין לחולין בין לתרומה לחומרא
is also an interposition with regard to the washing of the hands and the sanctification of the hands and feet for the Temple service.<span class="x" onmousemove="('comment',' From the laver, v. Ex. XXX, 21.');"><sup>5</sup></span>
ולא תימא
And you must not suppose that R'Ammi [said so] because he was a priest,<span class="x" onmousemove="('comment',' And in order to acquire the habit of washing the whole surface of the fingers for terumah he ruled likewise for common food; I.e., it was merely a personal restriction.');"><sup>9</sup></span>
עד כאן בין לחולין בין לתרומה לחומרא
Rab said: A person may wash both his hands in the morning and stipulate that it shall serve him the whole day long.<span class="x" onmousemove="('comment',' And he need not wash them again before his meals; he must however take care that his hands do not become dirty or unclean.');"><sup>10</sup></span>