Matt.5.31  "It was also said, `Whoever divorces his wife, let him give her a certificate of divorce.'
Matt.19.7  They said to him, "Why then did Moses command one to give a certificate of divorce, and to put her away?"
Mark.10.4  They said, "Moses allowed a man to write a certificate of divorce, and to put her away."

Hyper-concordance v1.1, by Sean Boisen. Scripture verses taken from the Revised Standard Version, copyright 1952, 1971.