Hadith 861
Anas bin Malik (May Allah be pleased with him) reported:
وعن أنس رضي الله عنه قال: قال لي رسول الله صلى الله عليه وسلم : "يا بُني، إذا دخلت على أهلك، فسلم، يكن بركة عليك، وعلى أهل بيتك" ((رواه الترمذي وقال: حديث حسن صحيح)).
The Messenger of Allah (ﷺ) said to me, "Dear son, when you enter your house, say As- Salamu 'Alaikum to your family, for it will be a blessing both to you and to your family." [At-Tirmidhi, who classified it as Hasan Sahih].
In plain words
The Prophet advised greeting your family with salam when you enter your home, promising it as a blessing for you and for them. It keeps courtesy and peace alive right at home.
Reference : Riyad as-Salihin 861 In-book reference : Book 5, Hadith 18