My question is about something not clear to me from long time. Please answer me clearly.
1) If husband do an anal sex with his own wife or by the desire of his wife he did so. What is the Hadd in Islam to that person?
2) Is the Hadd of Zina apply on a person who will do the anal sex with women or there is some other Hadd for sinner?

All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger. We ask Allaah to exalt his mention as well as that of his family and all his companions.

If a man has sex in the anus with a marriageable woman he deserves a corporal punishment determined by Islamic Law, which is to be slashed 100 times and exiled for one year if he is single, but if he is married he will be stoned to death, because he had forbidden sex. Ibn Qudaamah said: 'There is no difference, whether one had forbidden sex in the vagina or in the anus. If one chooses to have sex in the anus the corporal punishment determined by Islamic Law will be applied to him exactly as if he had sex in the vagina. If one has forbidden sex in the vagina, and the corporal punishment determined by Islamic Law is applied on him, then it is more appropriate to apply this punishment on him if he has forbidden sex in the anus.'

Indeed Allaah named adultery or fornication as a great sin, and something that transgresses its limits as Allaah says (which means): {And come not near the unlawful sexual intercourse. Verily it is a fahishah (i.e. anything that transgresses its limits; a great sin) and an evil way (that leads one to Hell) unless Allaah forgives him/her.}[17: 32]. Allaah also named having sex in the anus as a great sin and something that transgresses its limits. Allaah says (which means): {And (remember) Lout (Lot), when he said to his people: "Do you commit the worst sin such as none preceding you has committed in the 'Alamîn (mankind and jinns)?}[Quran 7:80].

However, if a married person has sex in the anus with his wife, he is not considered as having committed adultery and the corporal punishment determined by Islamic Law for adultery or fornication will not be applied on him, but he has committed a sin and he should stop doing it and repent to Allaah. Indeed a severe threat has been reported on a husband who has sex with his wife in her anus as the Prophet said: "Allaah cursed the husband who has sex with his wife in her anus." [Abu Daawood]   

Allaah knows best.