The Bach (to the Tur, Orach Chayim 4, sv: “v’yedakdek…”) writes that it’s important to wash ones hands upon arising because “yadayim askaniyot hem – hands are busy.” In other words, in the course of one’s sleep it is almost impossible that one’s hands did not touch a part of the body that is normally covered. That is why even women must wash their hands in the morning (even though they are not required to recite Shema or the prayers).
The Mechaber states (Orach Chayim 164:1 based on Chullin 106b) that one may wash Netilat Yadayim in the morning and stipulate that it serve him the entire day (if water is scarce – see Tosafot sv: notel adam yadav) as long as he remains aware of his stipulation and takes care that his hands not become unclean (see Rashi on Chullin 106b sv: u’masne).
The Rema (164:1) disagrees with the Mechaber and rules that the stipulation is only valid to satisfy other ritual washings in the course of the day. It does not, however, cover the washing necessary before eating bread.
Nevertheless, it is clear that everyone agrees with the Mechaber’s ruling that one must take care to wipe one’s hands carefully whenever one ritually washes them.
Now, the next question is: Must we literally “wipe” our hands or does it suffice that they become dry (no matter how that purpose is accomplished – say through an electric dryer)?
(To be continued)