﴿ وَلَا تَأْكُلُوا۟ مِمَّا لَمْ يُذْكَرِ ٱسْمُ ٱللَّهِ عَلَيْهِ وَإِنَّهُۥ لَفِسْقٌۭ ۗ وَإِنَّ ٱلشَّيَٰطِينَ لَيُوحُونَ إِلَىٰٓ أَوْلِيَآئِهِمْ لِيُجَٰدِلُوكُمْ ۖ وَإِنْ أَطَعْتُمُوهُمْ إِنَّكُمْ لَمُشْرِكُونَ ﴾

“Hence, eat not of that over which God's name has not been pronounced: for this would be sinful conduct indeed. And, verily, the evil impulses [within men's hearts] whisper unto those who have made them their own that they should involve you in argument [as to what is and what is not a sin]; and if you pay heed unto them, lo! you will become [like] those who ascribe divinity to other beings or forces beside God.”

In the matter of eating and drinking and other everyday routines, every community develops a customary religion. People have strong feelings about this customary or traditional religion because of the testimonies of ancestors and of great men of the past, which exist in its support. Deviation from this becomes synonymous with turning away from the religion of the revered forefathers. So, when the call of Truth clashes with this customary religion, all sorts of objections are raised against it. The great men of the day seek out such aspects of established practices as will convince the general public that their customary religion is correct and the ‘new religion’ is wrong. But God is aware of everything. On Doomsday, when He lays bare the realities, every individual will see whether he has been standing on the firm ground of reality or on the thin ice of superstition.