In the Holy Quran, Allah Ta’ala has enjoined Muslim women not to be soft in speech while talking to non-mahram men. If they happen to talk to non-mahram, they should avoid talking in soft and delicate style which is naturally found in women and attracts a man towards it. Therefore, it is unlawful for a Muslim woman to come on radio and speak in melodious voice. The seriousness of the matter increases when the non-mahram men know the woman personally.
(2) Teaching of male teacher to major and adolescent girls without hijab and vice versa (teaching of female teacher to major and adolescent boys) is not lawful.
(3) If tasmiyah (بسم اللہ اللہ اکبر) was not recited intentionally, it is unlawful to eat it, but in case of forgetting it is allowable to eat.
(4) If all three animals were slaughtered without tasmiyah and they intermingled, it is unlawful to eat the meat of any of the animals.
Allah (Subhana Wa Ta’ala) knows Best
Darul Uloom Deoband