Commentary for Kiddushin 73:4
מנה"מ דת"ר (דברים יב, א) אלה החוקים אלו המדרשות והמשפטים אלו הדינים אשר תשמרון זו משנה לעשות זו מעשה
But phylacteries and the [redemption of] the firstling of an ass are practised both within and without the land, though 'coming' is written in connection with them?<span class="x" onmousemove="('comment',' Ex. XIII, 11ff.: And . . when the Lord shall bring thee (in Heb. 'bring' is the causative form of 'come' - 'make thee come') into the land . . then every firstling of an ass thou shalt redeem with a lamb . . and it shall be for a sign upon thine hand, and for frontlets between thine eyes');"><sup>6</sup></span> - Said Rab Judah: This is its meaning: every precept which is a personal obligation<span class="x" onmousemove="('comment',' I.e., which throws no obligation upon the soil or its produce, but on the person himself.');"><sup>7</sup></span>