Le Lévitique 8:23 Halakha : Mishneh Torah, Human Dispositions & Mishneh Torah, Prayer and the Priestly Blessing

The disciples of the wise conduct themselves with an abundance of privacy. They should not degrade themselves; and they should not uncover their heads and not their bodies. Even when entering a lavatory he should act decently, not to bare himself before sitting down nor use his right hand to dry himself, and remove himself from every human being and use an inner room, or an inner cave, and if it be behind a trench he should distance himself so that his neighbor will not hear him, and if it be on a plain, distance himself so that his neighbor will not see him; and not talk when voiding even if there be great need. And, in the self-same decent manner he follows by day he should follow by night; but one should train himself to have elimination morning and evening, to avoid the need of distancing himself.⁹Berakot, 62; Horayot, 13; Tamid, 27; Shabbat, 82. C. G.

Age: A priest who is a youth does not perform this rite till his beard has grown. Wine: One who has drunk a fourth of a log^*A log is equal in capacity to six hen’s eggs, hence a quarter of a log equals one and a half eggs. of wine in one draught does not perform this rite till the effect of the wine has passed off—the Priestly Benediction being analogous to the Temple service. If, however, he drank a fourth of a log of wine in two draughts, or diluted it with a little water, he is permitted to perform the rite. If he drank more than a quarter of a log, even mixed with water, and even if he drank it in several draughts, he must not perform the rite till the effect of the wine has passed off. How much is the fourth of a log? The contents of a vessel two finger breadths long, two finger breadths wide and two and seven-tenths finger breadths high. In all measurements throughout the Torah, the finger used is the thumb, called Bohen Yad.