(Bamidbar 10:5) "And when you blow a teruah, then there shall travel the eastern encampments. (6) And when you blow a second teruah, then there shall travel the southern encampments": Perhaps just as he blows (tekiah-teruah-tekiah [separately]) for the eastern and southern (encampments), thus does he blow (them separately) for the northern and western encampments. It is, therefore, (to negate this) written "a teruah (i.e., tekiah-teruah-tekiah) shall they blow for their travels" — one tekiah (i.e., one set tekiah-teruah-tekiah) for two sides (together, the northern and the western). Other say: (The meaning is) three (i.e., three blowings, tekiah-teruah-tekiah) for each side (northern and western individually).