“[…] I urge you to keep away from food that is declared illicit according to Law. Whosoever persists in this will nullify his good deeds with no other outcome.
The Prophet (peace and blessings be upon him) has said: « On the Day of Judgement, people will come with good deeds as high as the mountains of Tuhama, but when these good deeds are presented, they will turn into scattered dust.” They said to him: “O Messenger of ALLAH, describe these people to us, because, by ALLAH, we fear being one of them.” The Prophet (peace and blessings be upon him) said: “By ALLAH! Certainly they fasted, they prayed, and they wore themselves out in devotion for part of the night, but when they saw something unlawful they rushed towards it. For this, ALLAH cancelled their good deeds and threw them into Hell.”
Even if the whole Earth was filled with unlawful things, certain situations do exist authorizing them in the case of necessity and difficulties. Indications for obtaining these authorizations will be mentioned follow this advice, if ALLAH wishes.
I order you to keep away from the bad habits that the people of today cultivate and in which they indulge, extending as far as the horizon, with the exception of a small number of creatures. We are referring to the attitude of deceit used in all transactions and affairs, people are immerged in obtaining corrupt selling and purchasing transactions, for things that the holy Law has clearly or implicitly forbidden. This is detailed in the Jurisprudence.