Is ghusl obligatory for the wife if the husband masturbates her to orgasm without ejaculation, and what is the ruling on this act during her menstrual period?

Ghusl is not obligatory except upon the emission of semen or by intercourse, even without emission. It is permissible for a husband to enjoy his wife during menstruation with anything other than intercourse, but the customs that may prevent enjoyment with a woman he has contracted with until she is presented to him should be respected. Also, the saying "There is no shyness in religion" is not a prophetic hadith.