Answer: In response to your question, the asal (fundamental principle) regarding in-laws is that a man should not enter upon or interact freely with non-mahram women. This ruling is based on a hadith narrated by both Imam Al-Bukhari and Imam Muslim, in which the Messenger of Allah ﷺ said:
"Stay away from entering upon women."
A man from the Ansar asked: "O Messenger of Allah, what about the in-law (brother-in-law)?"
The Prophet ﷺ replied: "The in-law is death." (Bukhari: 5232)
This hadith emphasizes the seriousness of interactions between a woman and her brother-in-law. A woman should not speak freely or laugh casually with her brother-in-law, as such behaviour can lead to inappropriate situations.
Scholarly Opinions on a Woman’s Voice:
Some scholars hold the opinion that a woman’s voice is awrah (something that should be concealed).
While this opinion is considered weak by many scholars, it is still a view that exists. According to this perspective, a woman should only speak to non-mahram men when there is a genuine need (hajjah). Although this opinion is not widely accepted, it is best to err on the side of caution and avoid unnecessary conversations with non-mahram men.
Prohibition of Staying Alone with Non-Mahram Women:
An in-law should not stay alone in a house with a non-mahram woman, as this can lead to evil consequences. It is important to maintain proper boundaries to protect oneself from fitnah (temptation or trial).
Advising Brothers:
If a brother sees his sibling being overly permissive with his wife—allowing her to sit or interact freely with non-mahram men—he should advise him and remind him of the Islamic guidelines. This reminder may serve as a means of rectification and guidance. Allah says in the Quran:
"Remind, for indeed, the reminder benefits the believers." (Quran 51:55)
And He also says:
"And remind, for verily the reminder benefits the believers." (Quran 87:9)
Conclusion:
It is essential to maintain proper boundaries with non-mahram women, including in-laws. A woman should avoid unnecessary interactions with her brother-in-law, and a man should not stay alone with a non-mahram woman. Brothers should advise one another to uphold these Islamic principles. May Allah guide us all to what is best and protect us from harm.
Anything I have said that is correct is from Allah, and anything incorrect is from myself and Shaytan. May Allah forgive me, and may He guide us to the straight path.
— Answered by Ustadh Abdulrahman Hassan
