[Machine] The Messenger of Allah ﷺ performed ablution, then he wiped his head once and prayed, then he greeted once. It has been narrated from a group of Companions that they also greeted with one greeting, and this is from the permissible difference and to confine oneself to what is permissible. And with Allah is success.
رَسُولَ اللهِ ﷺ تَوَضَّأَ فَمَسَحَ رَأْسَهُ مَرَّةً وَصَلَّى فَسَلَّمَ مَرَّةً وَرُوِيَ عَنْ جِمَاعَةٍ مِنَ الصَّحَابَةِ ؓ أَنَّهُمْ سَلَّمُوا تَسْلِيمَةً وَاحِدَةً وَهُوَ مِنَ الِاخْتِلَافِ الْمُبَاحِ وَالِاقْتِصَارِ عَلَى الْجَائِزِ وَبِاللهِ التَّوْفِيقُ