Reciting Tasmiyah through a recorder upon slaughtering an animal

Q 4: Is it permissible to mention Tasmiyah (saying, "Bismillah [In the Name of Allah]") by means of a cassette player while slaughtering?

A: It is not permissible to mention Tasmiyah by means of a cassette player at the time of slaughtering, because this utterance is required on the part of the person who slaughters to make the slaughtered animal Halal (lawful). Also, acts of worship are Tawqifiy (bound by a religious text and not amenable to personal opinion), which entails that they are to be done in the manner stated in the Qur'an and the Sunnah (whatever is reported from the Prophet).