Talmud su Cantico dei cantici 7:7

It is a religious precept to place the Ḥanukkah lamp by the door which is near to the public domain,²¹So that the light is seen from the street. in such a manner that the mezuzah should be on the right hand and the Ḥanukkah lamp on the left, to fulfil what is stated, How fair and how pleasant art thou²²Cant. 7, 7.—how fair with the mezuzah and how pleasant with the Ḥanukkah lamp. The number²³Inserted by GRA, wanting in V, M and H. of lights [for each night] is in accordance with the ruling of the School of Hillel,²⁴One light on the first night, two on the second, and so on, until eight lights burn on the eighth and last night of the Festival. because in sacred matters one should proceed to a higher grade²⁵Adding lights on the succeeding nights. but not descend to a lower one,²⁶As would happen if the number were to be reduced from eight on the first night to one on the last in accordance with the view of Beth Shammai. [and also because the number of lights should] correspond to the days [of the Festival] as they pass.