Does the implementation of hudud (the fixed Qur'anic punishments) expiate sins?

Question:
Does the implementation of hudud (fixed Qur'anic punishments) expiate sins, such as killing, stoning, and flogging, and so on?

Answer:
Yes, it is established from him (peace and blessings be upon him) that when the sins were mentioned, he said: “Whoever……has an expiation for them. If a man commits unlawful sexual intercourse and is flogged, and he does not return to it, the flogging becomes an expiation for him. If he commits unlawful sexual intercourse and is stoned to death because he is a married man, the stoning becomes a repentance for him. Allah erases the sin from him, and He does not hold it against him on the Day of Resurrection. Allah does not combine two punishments for a person: the punishment of this world and the punishment of the Hereafter. However, the man who commits unlawful sexual intercourse, the hadd is established against him, and then he returns to it, he is punished for the second offense, not the first. And so it is with every sin that is repeated. As for the unlawful sexual intercourse from the first instance, for which he repented or for which the hadd was established, he is not punished for it. But if he returns to a second instance of unlawful sexual intercourse after repenting, he is punished for the second. If he repents from the second and then returns to a third, he is punished for the third. And so the fourth, and so the fifth. Every sin for which one repents is not held against him. But if he returns to something new, he is held accountable for the new sin until he repents. This is not called a nullification of the first repentance. No, if the repentance was sincere and met the conditions, and then he fell into sin after that, having already repented with a sincere repentance—one of the conditions of resolve is that he does not return to it—but he was afflicted by Satan and returned, may Allah protect us from that—then he is held accountable for the last sin until he repents to Allah from it. And so, everyone who returns to sin after a sincere repentance is held accountable for the last one, not for what passed before.