Answer
Wa `alaykum as-Salamu wa Rahmatullahi wa Barakatuh.
In the Name of Allah, Most Gracious, Most Merciful.
All praise and thanks are due to Allah, and peace and blessings be upon His Messenger.
In this fatwa:
The Muslim woman is permitted to use a vibrator only as a last resort (i.e. if there is no any other way to save herself from committing zina except the use of the vibrator)
Responding to the question, the eminent Muslim scholar, Sheikh `Abdel Khaliq Hasan Ash-Shareef, the renowned da`i, states:
Highlighting the attributes of true believers, Almighty Allah says in the Qur’an, “Those who guard their sexual organs except with their spouses or those whom their right hands possess, for (with regard to them) they are without blame. But those who crave something beyond that are transgressors.” (Al-Mu’minun 23:5-7)
In this verse, Allah, Exalted Be He, outlines the way sexual desires are satisfied, and regards any other form of satisfying sexual desire (such as masturbation) as transgression or violation of Allah’s bounds. This applies to both men and women, although women are supposed to be more bashful and modest than men.
The majority of scholars consider masturbation haram. Imam Malik bases his judgment on the forgoing verse arguing that someone who masturbates is one of those who “crave something beyond that.
On the other hand, it is reported that Imam Ahmad Ibn Hanbal regards semen as an excretion of the body like other excreta, and permits its expulsion the same way bloodletting is permitted. Ibn Hazm holds the same view. However, the Hanbali jurists permit masturbation only under two conditions: first, the fear of committing fornication or adultery, and second, not having the means to marry.
Allah Almighty knows best.