Mishkat al-Masabih 4620
Umm al-‘Ala’ al-Ansariya said that while she was asleep she saw a spring belonging to 'Uthman b. Maz'un flowing, and when she told God’s messenger he replied:
“That represents his good deeds* which are kept increasing for him.” 

Bukhari transmitted it.

* ‘Uthman had died after the battle of Badr, but this vision is taken as showing that his good deeds were still increasing. This is said to mean their reward. Cf. Mirqat, iv, 545.
وَعَنْ أُمِّ الْعَلَاءِ الْأَنْصَارِيَّةِ قَالَتْ: رَأَيْتُ لِعُثْمَانَ بْنِ مَظْعُونٍ فِي النَّوْمِ عَيْنًا تَجْرِي فَقَصَصْتُهَا عَلَى رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَ: «ذَلِكِ عَمَلُهُ يُجْرَى لَهُ» . رَوَاهُ الْبُخَارِيُّ