Hawzah News Agency – The merciful prophet of Islam, peace be upon him and his household says:

إذا دَخَلَ أحَدُكُم بَيتَهُ فَلْيُسَلِّمْ؛ فإنَّهُ يَنزِلُهُ البَركَةُ، وتُؤنِسُهُ الملائكةُ.

'When anyone of you enters his own house, he should greet with peace, for verily it brings down benediction, and angels come to keep him company.'

Source: Bihar al-Anwar, v. 76, p. 7, no. 25