Hadith: The prayer and what your right hands possess

عَنْ أَنَسٍ رَضيَ اللهُ عنه قَالَ:
كَانَتْ عَامَّةُ وَصِيَّةِ رَسُولِ اللهِ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ حِينَ حَضَرَهُ الْمَوْتُ: «الصَّلَاةَ وَمَا مَلَكَتْ أَيْمَانُكُمْ، الصَّلَاةَ وَمَا مَلَكَتْ أَيْمَانُكُمْ»، حَتَّى جَعَلَ رَسُولُ اللهِ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ يُغَرْغِرُ بِهَا صَدْرُهُ، وَمَا يَكَادُ يُفِيضُ بِهَا لِسَانُهُ.
[صحيح] - [رواه النسائي في السنن الكبرى وابن ماجه] - [مسند أحمد: 12169]

Anas (may Allah's peace and blessings be upon him) reported:
The main advice of the Messenger of Allah (may Allah's peace and blessings be upon him) when death approached him was: "The prayer and what your right hands possess, the prayer and what your right hands possess." The Messenger of Allah (may Allah's peace and blessings be upon him) continued to repeat it until his chest was gurgling with it, and his tongue could barely utter it.
[Authentic hadith] - - [Musnad Ahmad - 12169]

Explanation

The Prophet's main advice to his Ummah while he was in the throes of death was: Adhere to the prayer, observe it, and do not neglect it. Likewise, fulfill the rights of those whom your right hands possess, including slaves and bondmaids, and treat them kindly. He kept repeating this until his throat gurgled with it, and his tongue could barely articulate it.