Are there conditions for the one who stones?

Question:
One of the Shari'ah courts in the city of Taiz in the Yemen Arab Republic ruled to stone a woman for zina (unlawful sexual intercourse). Some people hesitated to participate in the stoning, arguing that there are conditions for the one who stones: that the one who stones must be free from sin, and much was said about this. Please inform us about this—may Allah reward you with good.

Answer:
I was greatly pleased with the court's ruling in Taiz to stone the married woman who committed zina, because of the establishment of Allah's limit (hadd) that most Islamic states have neglected. May Allah reward the court with good, and guide the government of Yemen and all Islamic governments to judge by Allah's Shari'ah among His servants in matters of hudud (fixed punishments) and others. There is no doubt that judging by Allah's Shari'ah brings rectification to their affairs and happiness for them in this world and the Hereafter. Muslims should cooperate in this.
And whoever participates in stoning a married adulterer is rewarded, and no one should hesitate to do so once the Shari'ah ruling of stoning has been issued. The Prophet (peace and blessings be upon him) ordered the Companions to stone Ma'iz al-Aslami, the two Jews, al-Ghamidiyyah, and others, so the Companions hastened to do so , and may Allah guide the Muslims to follow their methodology in hudud and other matters.
It is not a condition for the one who participates in stoning to be sinless or free from sins, because the Messenger (peace and blessings be upon him) did not make that a condition. It is not permissible for anyone to impose a condition for which there is no evidence from the Book of Allah the Exalted or from the Sunnah of His Messenger (peace and blessings be upon him). And Allah grants success.