26 But, some one will say, Give me yet another sign; what other exact sign is there of that which has come to pass? Jesus was crucified; and He wore but one coat, and one cloak: now His cloak the soldiers shared among themselves, having rent it into four; but His coat was not rent, for when rent it would have been no longer of any use; so about this lots are cast by the soldiers; thus the one they divide, but for the other they cast lots. Is then this also written? They know, the diligent chanters of the Church, who imitate the Angel hosts, and continually sing praises to God: who are thought worthy to chant Psalms in this Golgotha, and to say, They parted My garments among them, and upon My vesture they did cast lots. The “lots” were what the soldiers cast.
Source: Catechetical Lectures (New Advent)