The Messenger of Allah ﷺ said, "O Allah, make the provision of the family of Muhammad just enough to sustain them."
حدثنا محمد بن عبد الله بن نمير وعلي بن محمد قالا حدثنا وكيع حدثنا الأعمش عن عمارة بن القعقاع عن أبي زرعة
قال رسول الله ﷺ اللهم اجعل رزق آل محمد قوتا
Bukhari narrated it, Chapter on frugality, section on how the life of the Prophet ﷺ and his companions was... etc., Hadith: 6460, from the hadith of Umarah through him, and Muslim (see the previous hadith), Hadith: 1055/126, from the hadith of Waki through him.