Question Summary:
during the periods of wife , if husband touches his private part to wife private part, but husband private not entered in wife private part ghusl necessary for both or husband only

Question Detail:

during the periods of wife , if husband touches his private part to wife private part, but husband private not entered in wife private part ghusl necessary for both or husband only

Answer :

In the name of Allah, Most Gracious, Most Merciful
Assalaamu `alaykum waRahmatullahi Wabarakatoh
In the state of haiz, it is not permissible for the husband and wife to be intimate with each other between the area of the wife’s navel and knees. Nevertheless, if the husband merely touched the wife’s private parts, ghusl is not compulsory on either one.
And Allah knows best
Wassalam
Mufti Ebrahim Desai

Darul Iftaa, Madrassah In'aamiyyah