Answered by Mufti Mohammed Tosir Miah
Is it allowed that husband kiss his wife undress from back as the husband private part touches his wife anus without penetration?
Anal Sex is something which is haram and unlawful in Islam. It is narrated by Saaiduna Ibn Abbas that the Prophet of Allah has said:
“Allah does not look at a man who comes to a man or to a woman through its back.”
(Sunan Tirmizi p.220 v.1)
It is permissible for the husband to touch the surrounding and outside area of the anus even by rubbing his penis in between his wife’s buttocks as long as there is no penetration. It should be borne in mind that this will only be permissible if one is certain of avoiding penetration, otherwise abstaining from that area will be necessary. (Islamic Guide to Sexual Relations, Mufti Ibn Adam Al Kawthari, p.96)
With regards to your question, it will be permissible for the husbands private part to touch his wife’s anus whilst kissing her back however, to abstain from touching the anus area with the private part will be more preferable as it may lead to penetration.
Only Allah Knows Best
Mohammed Tosir Miah
Darul Ifta Birmingham.