بسم الله الرّحمن الرّحيم.
السّلامَ عليكم. =)
The adultery of the tongue is to talk and the adultery of the ears is to hear. In view of this the unfamiliar man and women should exercise great care. If they have to talk under compulsion of due to some dire need, they should keep it short and conclude it with affirmatives or negatives. They should keep their voices mute as far as possible and never speak in a soft, alluring tone.
"At the time of need we hold it to be lawful for a woman to speak to an unfamiliar man or ask a question from him or answer his question. However, she is not permitted to prolong her talk with him or talk in a soft tone or affect some delicacy in speech, for such conduct will tempt men and arouse their evil passion."
[Mishkaat ul Masabih]
Allah says in Surah Al-Ahzab;
"Be not too complaisant of speech, lest one in whose heart is a disease shoul be moved with desire. But speak ye a speech (that is) just. Which of courss is the well-known and well-tried manner of chaste and honourable women."
