Hisnul Muslim 18

When entering the home

بِسْـمِ اللّهِ وَلَجْنـَا، وَبِسْـمِ اللّهِ خَـرَجْنـَا، وَعَلَـى رَبِّنـَا تَوَكّلْـنَا

Bismillaahi walajnaa, wa bismillaahi kharajnaa, wa 'alaaRabblnaa tawakkalnaa

In the Name of Allah we enter, in the Name of Allah we leave, and upon our Lord we depend.(One should mention the Name of Allah when entering the home and when beginning to eat; and that the devil, hearing this, says: “there is no shelter for us here tonight and no food”.)