Males teaching women Qurʿān behind a veil

Sheikh Albani rahimahullah said: “If a Qurʿān teacher (Muqri') were to teach women over the phone and they recite to him and he hears their voices, then the ruling is as if he heard their voices from behind a veil without seeing their bodies. Despite that, Fitnah occurs in both cases; whether he hears her voice directly without the presence of these means of transmission, or he hears her voice through these means of transmission, because in both cases he hears her actual voice. Moreover, the voice of a woman is not 'Awrah, contrary to what has become widespread amongst people - provided it is her natural voice! As for reciting and beautifying her recitation using Iqlāb, Ith-hār and other than that, like the Madd Muttasil and Munfasil; which is known as Tajwīd, and we also have the statement of the Prophet ﷺ: ((لَيْسَ مِنَّا مَنْ لَمْ يَتَغَنَّ بِالْقُرْآنِ)) “Whoever does not recite the Qur'ān in a beautiful melodious manner is not from us.” So she is required to beautify her recitation of the Qur'ān, WHICH IS ABSOLUTELY INAPPROPRIATE FOR HER TO DO IN FRONT OF (NON-MAHRAM) MEN, whether that takes place via radio or over the phone.” [Fatāwa Jeddah, Tape 20, 1st side, minute 1:47]