Breaking dirhams and altering them

Ghaylan said: I said to Umar bin Abdul Aziz: It would be better if these dirhams were changed, for they pass into the hands of the Jew, the Christian, the ritually impure person and the Magian. He said: Do you want the followers of other religions to raise objections against you? Do you want to change the declaration of the oneness of the Lord and the name of your Prophet (peace and blessings be upon him)?

It is narrated from Sayyiduna Abdullah (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) forbade breaking the coinage (dirhams) of the Muslims that is current among them, unless there is some defect in it.

Ata said: The people became sinful through their minting of white dirhams.