And Jesus answered and said unto them, For the hardness of your heart he wrote you this precept.
Berean Study Bible (BSB) - Mark 10:5 >But Jesus told them, “Moses wrote this commandment for you because of your hardness of heart.
Textus Receptus (TR) - Mark 10:5 >Καὶ ἀποκριθεὶς ὁ Ἰησοῦς εἶπεν αὐτοῖς, Πρὸς τὴν σκληροκαρδίαν ὑμῶν ἔγραψεν ὑμῖν τὴν ἐντολὴν ταύτην·