SHAFAQNA – There are many holy verses and narrations (Hadith) regarding consuming Haram food. In one of these narrations, it is narrated from the Prophet of Islam (PBUH) who said: A person who eats a mouthful of Haram food, his/her Salaats and supplications (Duas) will not be accepted (by Allah (SWT)) for 40 days and the flesh which is grown from that Haram mouthful will be more deserving to the hell fire [1].
[1] Beharul Anwaar, Vol. 44, Page 313, Hadith 7.