Reference : Hisn al-Muslim 201

بارَكَ اللهُ لَكَ في أَهْلِكَ وَمالِك
Bārakallāhu laka fī ahlika wa mālik.

May Allah bless you in your family and your property.

Reference:
Al-Bukhari, cf. Al-Asqalani, Fathul-BAri 4/88.

Chapter: To one who has offered you some of his wealth