Is delegation permissible for executing Hadd punishments established by God, such as those for theft or illicit sexual relations (Zina)?

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Delegation in the execution of Hadd punishments is permissible. The Prophet Muhammad (peace be upon him) delegated the execution of a Hadd punishment by instructing Anis: "Go in the morning to this man's wife; if she confesses, stone her." Anis executed the stoning after her confession, which is agreed upon by Bukhari and Muslim. Similarly, the Prophet ordered the stoning of Ma'z, and they stoned him. Uthman delegated Ali to implement the Hadd for drinking against Al-Walid ibn Uqba, and Ali delegated Al-Hasan, who refused, so Ali delegated Abdullah ibn Ja'far, who executed it while Ali observed. Necessity dictates this allowance, as the Imam cannot personally oversee all such executions.