what is permissible when wife is on period

It is allowed for him to enjoy pleasure with his wife in any way except for her private parts when she is on her period. There are several hadiths about this:

First: "and do everything except intercourse itself."

Second: On the authority of 'Aa'ishah who said: "When we were on our periods, the Prophet used to order us to put on a waist cloth that her husband can then lie with her." One time she said: "... her husband can then fondle and caress her." .

Third: On the authority of one of the wives of the Prophet who said: "When the Prophet wanted something from one of his wives who was on her period, he put a cloth over her private parts, and then did whatever he wanted."