Muwatta Imam Malik (Riwayat Yahya)

Imam Malik, may Allah have mercy on him, said that if someone gives his cloth to a dyer to dye, and the dyer dyes it, and now the owner of the cloth says: "I did not tell you to dye it this color," and the dyer says: "You told me to dye it this color," then the statement of the dyer will be accepted with an oath. The same ruling applies to a tailor, and to a goldsmith when they take an oath. However, if they claim something that is completely against custom and usage, then their statement will not be accepted; rather, an oath will be taken from the owner of the cloth, and if he does not take the oath, then the oath will be taken from the craftsman.