Du'a for a mother's provision

اللَّهُمَّ اغْفِرْ لَهَا ذَنْبَهَا، وَوَسِّعْ لَهَا فِي دَارِهَا، وَبَارِكْ لَهَا فِي رِزْقِهَا

Allahummaghfir laha dhanbaha, wa wassi' laha fi dariha, wa barik laha fi rizqiha

O Allah, forgive her sins, expand her home for her, and bless her provision.

Adapted into the third person feminine from Sunan al-Tirmidhī 3500.