Sayyed Mohammad Al-Musawi, Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to... Answered 4 months ago

Step-dad of your husband in non Mahram to you and to your daughters. If he has a real son who can enter with you in a verbal temporary marriage contract for a short while with out consummating it , that will make his father (the step-dad) Mahram to you and your daughters. If that verbal contract is done with your daughter, his real father ( the step-father) will be Mahram to your daughter.

Wassalam.