"Leave him and do not restrain him." When he had finished he called for a bucket (of water) and poured it over it. [1] Abu 'Abdur-Rahman (An-Nasa'i) said: "Meaning: 'Do not interrupt him.'" [1]The author will cite this narration again in No. 330 as a possible proof for setting the minimum, since it mentions "a bucket" as if this is the minium amount required.
أَنَّ أَعْرَابِيًّا بَالَ فِي الْمَسْجِدِ فَقَامَ إِلَيْهِ بَعْضُ الْقَوْمِ فَقَالَ رَسُولُ اللَّهِ ﷺ دَعُوهُ لاَ تُزْرِمُوهُ فَلَمَّا فَرَغَ دَعَا بِدَلْوٍ فَصَبَّهُ عَلَيْهِ قَالَ أَبُو عَبْدِ الرَّحْمَنِ يَعْنِي لاَ تَقْطَعُوا عَلَيْهِ