Strictly speaking, the first half of saying 6 is spoken by the disciples, not Jesus. Sayings of shared authorship are: 6, 12, 13, 18, 20, 21, 22, 24, 37, 43, 51, 52, 53, 60, 61, 72, 74, 79, 91, 99, 100, 104, 111,113, 114.