513 كنا نَرَفَعُ للنبي صلى الله عليه وسلم نَصِيبَهُ من اللَّبَنِ ، فَيَجِيءُ من الليل، فَيُسَلِّمُ تسليما لا يُوقِظُ نائما، ويسمع اليَقَظَانَ
We used to set aside for the Prophet (may Allah's peace and blessings be upon him) his share of milk, and he would come at night and offer greetings in a tone that did not disturb those who were asleep but was heard by those who were awake

عن المِقْدَادُ رضي الله عنه في حديثه الطويل: كنا نَرَفَعُ للنبي صلى الله عليه وسلم نَصِيبَهُ من اللَّبَنِ ، فَيَجِيءُ من الليل، فَيُسَلِّمُ تسليما لا يُوقِظُ نائما، ويُسْمِعُ اليَقْظَانَ، فجاء النبي صلى الله عليه وسلم فَسَلَّمَ كما كان يُسَلِّمُ.

Al-Miqdād (may Allah be pleased with him) reported: We used to set aside for the Prophet (may Allah's peace and blessings be upon him) his share of milk, and he would come at night and offer greetings in a tone that did not disturb those who were asleep but was heard by those who were awake. So (one night), the Prophet (may Allah's peace and blessings be upon him) came and gave greetings as is he used to greet.

صحيح - ( رواه مسلم ). Sahih/Authentic. [Muslim]

كان المقداد ومن معه رضي الله عنهم بعد أن يحلبوا الشاة ويشربوا نصيبهم من اللَّبن يرفعون نصيبه صلى الله عليه وسلم ، حتى يأتي ليشربه، فكان صلى الله عليه وسلم إذا جاءهم من الليل وهم نيام سلَّم عليهم تسليمًا بصوت متوسط بين أقل الجهر وما فوقه، بحيث لا يوقظ نائما، وفي نفس الوقت يسمع اليقظان منهم.
Al-Miqdād and those who were with him used to milk their sheep and drink their portion of milk, then they would leave the portion of the Prophet (may Allah's peace and blessings be upon him) until he came to drink it. So, when he would come at night while they were sleeping, he would give greetings (Salām) in a moderate tone that would not wake the sleeping person up, whereas it would be heard by the ones who were awake.

مشروعية السلام على قوم فيهم نيام، ولكن السنة ألا يرفع صوته بحيث يسمع اليقظان ولا يوقظ النائم. مشروعية حفظ الطعام للغائب. جواز الدخول على الأهل ليلًا إذا لم يكن في سفر. بيان الشدة والضيق الذي كان يعيشه النبي -صلى الله عليه وسلم- وأصحابه. بيان لعظيم خلق رسول -صلى الله عليه وسلم- وتعليمه آداب التسليم. تواضع النبي -صلى الله عليه وسلم- لأصحابه، فإنه كان يخالط الصغير والكبير لا كما هو حال كثير من عظماء اليوم.