[Machine] The last advice of the Messenger of Allah ﷺ was to "maintain the prayer, maintain the prayer, and fear Allah regarding what is entrusted to your care."
كَانَ آخِرُ وَصِيَّةِ رَسُولِ اللَّهِ ﷺ وَهُوَ يُغَرْغِرُ بِهَا فِي صَدْرِهِ وَمَا كَانَ يُفِيضُ بِهَا لِسَانُهُ «الصَّلَاةَ الصَّلَاةَ اتَّقُوا اللَّهَ فِيمَا مَلَكَتْ أَيْمَانَكُمْ»
The last words which the Messenger of Allah ﷺ spoke were: Prayer, prayer; fear Allah about those whom your right hands possess.
كَانَ آخِرُ كَلاَمِ رَسُولِ اللَّهِ ﷺ الصَّلاَةَ الصَّلاَةَ اتَّقُوا اللَّهَ فِيمَا مَلَكَتْ أَيْمَانُكُمْ
ʿThe last words of the Messenger of Allah ﷺ were: “Prayer, prayer! And fear Allah with regard to what your right hands possess, [i.e.female slaves].ʿ
كَانَ آخِرُ كَلامِ رَسُولِ اللهِ ﷺ الصَّلاةَ الصَّلاةَ اتَّقُوا اللهَ فِيمَا مَلَكَتْ أَيْمَانُكُمْ
[Machine] It was from the final advice of the Prophet Muhammad ﷺ to emphasize prayer and taking care of those under one's authority until the Prophet Muhammad ﷺ made it seem as if it was tied to his chest, and he would frequently mention it with his tongue.
كَانَ مِنْ آخِرِ وَصِيَّةِ رَسُولِ اللهِ ﷺ الصَّلَاةَ الصَّلَاةَ وَمَا مَلَكَتْ أَيْمَانُكُمْ حَتَّى جَعَلَ نَبِيُّ اللهِ ﷺ يُلَجْلِجُهَا فِي صَدْرِهِ وَمَا يَفِيصُ بِهَا لِسَانُهُ
ʿThe last words of the Messenger of Allah ﷺ were: “Prayer, prayer! And fear Allah with regard to what your right hands possess, [i.e.female slaves].ʿ (Using translation from Aḥmad 585)
كَانَ آخِرُ كَلَامِ رَسُولِ اللهِ ﷺ الصَّلَاةَ الصَّلَاةَ اتَّقُوا اللهَ فِيمَا مَلَكَتْ أَيْمَانُكُمْ
"عَنْ عَلِيٍّ قَالَ: كَانَ آخِرُ كَلاَم النَّبِىِّ ﷺ الصَّلاَةَ الصلاَةَ، اتَّقُوا الله فِيمَا مَلَكَتْ أَيْمَانُكُمْ".