al-Nadr bin Shumayl al-Maazni النضر بن شميل المازني أبو الحسن النحوي · Chapters on Seeking Permission

"The Messenger of Allah (ﷺ) said to me: 'O my little son! When you enter upon your family then give the Salam, it will be a blessing for you and upon the inhabitants of your house."