Sunan an-Nasa'i 230
It was narrated that Abu Ja'far said:
"We argued about Ghusl in the presence of jabir in 'Abdullah, and Jabir said: 'One Sa' of water is sufficient for ghusl from Janabah.' We said: 'One Sa' is not enough and neither is two.' Jabir said: 'It was sufficient for one who was better than you and had more hair.'"
أَخْبَرَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، قَالَ حَدَّثَنَا أَبُو الأَحْوَصِ، عَنْ أَبِي إِسْحَاقَ، عَنْ أَبِي جَعْفَرٍ، قَالَ تَمَارَيْنَا فِي الْغُسْلِ عِنْدَ جَابِرِ بْنِ عَبْدِ اللَّهِ فَقَالَ جَابِرٌ يَكْفِي مِنَ الْغُسْلِ مِنَ الْجَنَابَةِ صَاعٌ مِنْ مَاءٍ ‏.‏ قُلْنَا مَا يَكْفِي صَاعٌ وَلاَ صَاعَانِ ‏.‏ قَالَ جَابِرٌ قَدْ كَانَ يَكْفِي مَنْ كَانَ خَيْرًا مِنْكُمْ وَأَكْثَرَ شَعْرًا ‏.‏