Талмуд к Бамидбар 10:5

⁶⁶Sifra Emor Parashah 11(9), Sifry Num. 73.“From where that there are three sets of three sounds each? The verse says, a day of sound⁶⁷Num. 29:1, a remembrance of sound⁶⁸Lev. 23:24., shofar of sound⁶⁹Lev. 25:9..” So far following Rebbi Aqiba. Following Rebbi Ismael? ⁷⁰Sifry Num. 73.“You shall blow sounding⁷¹Num. 10:5.; and you shall blow sounding a second time⁷²Num. 10:6.; sounding you shall blow for your travels⁷²Num. 10:6.. If you would say that blowing is sounding, is it not written, to assemble the people you shall blow but not sound⁷³Num. 10:7.”