Devarim 6:4-9

Shema Yisroel Adonoi (HASHEM) Eloheinu Adonoi (HASHEM) Echad. And thou shalt love HASHEM Eloheicha b'chol l'vavcha u'vchol nafshcha uvechol modecha. And these devarim, which I command thee today, shall be in thine lev; And thou shalt teach them diligently unto thy banim, and shalt talk of them when thou sittest in thine bais, and when thou walkest by the way, and when thou liest down, and when thou risest up. And thou shalt bind them for an ot upon thine hand, and they shall be as totafos (ornaments) between thine eyes. And thou shalt write them upon the mezuzot of thy bais, and on thy she'arim.