عَنْ أَنَسٍ رَضِيَ اللَّهُ عَنْهُ قَالَ كَانَتْ عَامَّةُ وَصِيَّةِ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ حِينَ حَضَرَهُ الْمَوْتُ الصَّلَاةَ وَمَا مَلَكَتْ أَيْمَانُكُمْ حَتَّى جَعَلَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ يُغَرْغِرُ بِهَا صَدْرُهُ وَمَا يَكَادُ يُفِيضُ بِهَا بِلِسَانِهِ
It is narrated from Sayyiduna Anas (may Allah be pleased with him) that before his passing, the general advice of the Messenger of Allah (peace and blessings be upon him) was to be steadfast in prayer and to treat slaves with kindness, until there was a rattling in the chest of the Messenger of Allah (peace and blessings be upon him) and these words could no longer be clearly uttered from his blessed tongue.