Question 1: Is it permissible to execute Hudood (ordained Islaamic punishments for violating Allaah’s Law) when there is no Muslim ruler?
Answer: Only a Muslim ruler or his deputy is entitled to execute the Hudood, so as to keep order, prevent transgression, and oppression, and provide security. A sinner has to repent to Allaah, seek His Forgiveness and increase his good deeds. If he returns to Allaah in genuine repentance, Allaah will forgive him and pardon him out of His Grace and Clemency. Allaah (Exalted be He) says… read more here.