Most High:

“Those to whom We have given the Scripture recognize him as they recognize their own sons. Yet a group of them knowingly conceal the truth.”

Testimony requires the witness to have knowledge, speak truthfully, and make his testimony clear. Its purpose cannot be fulfilled without these things. For this reason, He condemns those who conceal and distort the truth, saying, Most High:

“O you who believe, stand firmly for justice as witnesses for Allah, even against yourselves, your parents, or your close relatives. Whether someone is rich or poor, Allah has a greater claim over both. So do not follow your desires and depart from justice. If you distort your testimony or refuse to give it, Allah is indeed fully aware of what you do.”

In the two Sahīh collections, Hakīm ibn Hizām reports that the Prophet, may Allah bless him and grant him peace, said:

“The buyer and seller each have the option to cancel the transaction until they part. If they are truthful and make things clear, their transaction will be blessed. But if they lie and conceal things, the blessing of their transaction will be erased.”

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Since His testimony must be made clear to His servants so that they know He has borne witness, He has made it clear through both hearing and sight. Those who can hear listen to Allah’s revealed signs as they are recited, and those who can see behold His signs in what He has created and done. For His testimony entails