Musar על מכות 32:13

Now, you ought to remember the things that men tend to be lazy about. If you must look up something in a book, and you do not know where to find it, you must be quick to go and to ask someone who is familiar with the subject. If a poor man comes to your house to ask for bread, do not say, "I cannot go and get the bread," but go quickly and bring it. If you are about to wash your hands (before eating) and all you have is a little water or loathsome water, or if the vessel for the washing of the hands does not quite meet the ritual specifications (e.g., there is a crack in it) and you are hungry and want to eat, let not your hunger make you look lightly upon the washing of the hands, but be quick to bring water and a proper vessel. One must be very alert when it comes to taking care of his bodily needs. He should not delay even for a moment, so as not to transgress "And ye shall not make your souls detestable" (Lev. 20:25 — see also Makkot 16b). Then, too, the one who delays performing his bodily needs brings upon himself great illnesses.