Mark 10:4
And they said, Moses suffered to write a bill of divorcement, and to put her away.
Cross-reference
Deuteronomy 24:1–4
Citation
Deuteronomy 24:1-4 is the Mosaic divorce law that the Pharisees directly cite here.
Matthew 5:31
Citation
Matthew 5:31 quotes the same Mosaic divorce certificate law that the Pharisees reference here.
Matthew 5:32
Contrast
Matthew 5:32 gives Jesus' stricter divorce teaching, contrasting the Mosaic permission the Pharisees cite here.
Matthew 19:7
Parallel
Matthew 19:7 is the parallel account where Pharisees ask the same question about divorce certificates.