He greeted the Messenger of Allah ﷺ with the Salam when he was praying, and he returned the greeting.
أَنَّهُ سَلَّمَ عَلَى رَسُولِ اللَّهِ ﷺ وَهُوَ يُصَلِّي فَرَدَّ عَلَيْهِ
"A man greeted the Prophet (with Salam), and he was urinating, so he did not respond to him."
أَنَّ رَجُلاً سَلَّمَ عَلَى النَّبِيِّ ﷺ وَهُوَ يَبُولُ فَلَمْ يَرُدَّ عَلَيْهِ
[Machine] He greeted the Prophet ﷺ while he was urinating, but the Prophet did not respond to him until he had performed ablution.
أَنَّهُ «سَلَّمَ عَلَى النَّبِيِّ ﷺ وَهُوَ يَبُولُ فَلَمْ يَرُدَّ عَلَيْهِ حَتَّى تَوَضَّأَ»
He greeted the Messenger of Allah ﷺ with the Salam when he was praying, and he returned the greeting. (Using translation from Nasāʾī 1188)
أَنَّهُ «سَلَّمَ عَلَى رَسُولِ اللهِ ﷺ وَهُوَ يُصَلِّي فَرَدَّ عَلَيْهِ»
He greeted the Messenger of Allah ﷺ with the Salam when he was praying, and he returned the greeting. (Using translation from Nasāʾī 1188)
أَنَّهُ «سَلِمَ عَلَى رَسُولِ اللهِ ﷺ وَهُوَ يُصَلِّي فَرَدَّ عَلَيْهِ»