اللَّهُمَّ أَكْثِرْ مَالَهُ وَوَلَدَهُ وَبَارِكْ لَهُ فِيمَا أَعْطَيْتَهُ
Allahumma akthir malahu wa waladahu wa barik lahu fima a'taytahu
O Allah, vermehre seinen Reichtum und seine Kinder und segne ihn in dem, was Du ihm gegeben hast.
The Prophet made this dua for Anas (RA)
Anas (RA) became one of the wealthiest Companions with many children and grandchildren due to this blessed dua.