My master A’lā Ḥaḍrat رَحْمَةُ الـلّٰـهِ تَـعَـالٰی عَـلَيْـه answered, ‘Not permissible, because the voice of a woman should also be concealed; a non-Maḥram man listening to a woman’s attractive voice causes Fitnaĥ [mischief].’ (Fatāwā Razawiyyaĥ, vol. 22, pp. 240)
My master A’lā Ḥaḍrat رَحْمَةُ اللهِ تَعَالٰی عَلَيْه gives the following answer to another question, ‘It is Ḥarām for a woman to recite loudly in a beautiful voice in a way that non-Maḥram men can hear her tunes.’ Faqīĥ Abul Layš Samarqandī’s ‘Nawāzil’ states, ‘A woman’s beautiful voice should be concealed.’ Imām Abul Barakāt Nasafī’s ‘Kāfī’ states, ‘A woman should not recite the Talbiyaĥ (i.e. ‘لَبَّيۡكَ اَللّٰهُمَّ لَبَّيۡكَ’) loudly because her voice should be concealed.
‘Allāmaĥ Shāmī قُـدِّسَ سِـرُّهُ الـسَّامِی states, ‘It is prohibited for a woman to raise her voice, to lengthen and to shorten it, to speak softly, and to speak with short pauses like poetry, because in all these cases, men will be seduced towards them and be lustfully aroused. This is why a woman is not allowed to call the Azan.’ وَاللّٰهُ تَعَالٰي اَعۡلَم (And Allah عَزَّوَجَلَّ knows the most.)
(Rad-dul-Muḥtār, vol. 2, pp. 97; Fatāwā Razawiyyaĥ, vol. 22, pp. 242)
Islamic sisters! Servitude to Beloved Mustafa صَلَّى اللهُ تَعَالٰى عَلَيْهِ وَاٰلِهٖ وَسَلَّم is the global & non-political movement Dawat-e-Islami’s speciality, its affiliates are sometimes favoured with blessings from Allah عَزَّوَجَلَّ, leaving the human intellect astounded. This is a statement by an Islamic sister from Bāb-ul-Madīnaĥ (Karachi): Before joining Dawat-e-Islami’s fragrant Madanī environment, I was engulfed in various sins and was wasting my precious life’s priceless moments. Approximately 12 years ago, I had a sudden heart-attack and fainted.