Jābir ibn ‘Abdullah (may Allah be pleased with him and his father) reported that he heard the Prophet (may Allah's peace and blessings be upon him) say: "When one mentions Allah's name upon entering his house and upon eating, the devil says (to his companions): 'There is no night shelter nor supper here for you.' However, when one does not mention Allah's name upon entering his house, the devil says: 'You have found yourselves a night shelter.' If one does not mention Allah's name when starting to eat, the devil says: 'You have found yourselves both a night shelter and supper.'"
Authentic hadith - Narrated by Muslim

The Prophet (may Allah's peace and blessings be upon him) commands us to mention Allah upon entering the house and before eating. When one mentions Allah saying: "Bismillāh" (in the Name of Allah) upon entering his house and before eating, the devil says to his companions: You shall not have a night shelter or supper in this house whose owner has sought protection against you by mentioning Allah Almighty. However, if one enters his house without mentioning Allah upon entering and before eating, the devil informs his companions that they will have a night shelter and supper in this house.

  1. It is recommended to mention Allah upon entering the house and before eating as the devil spends the night in the houses and eats from its dwellers' food if they do not mention the name of Allah Almighty.
  2. The devil is closely observing the son of Adam in his deeds, acts, and all his affairs. So, when one is heedless of Dhikr (remembrance of Allah), the devil achieves what he wants from him.
  3. Dhikr repels the devil.
  4. Every devil has followers and allies who rejoice at his words and follow his commands.

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