[On Friday] one reviews each verse of the weekly Torah reading twice, followed by [the Aramaic paraphrase known as] Targum Onkelos.1 The Haftorah is also read, and if Rosh Chodesh falls on Shabbos, or when two sidros are combined, and the like, both of the possible passages are read.2

When he had pared his nails, it was the custom of the Rebbe Rashab to burn a splinter of wood together with them.3

On the eve of Shabbos [i.e., before sunset on Friday] and on Shabbos morning, one immerses oneself in a mikveh.4