Sahih al-Bukhari 6344
Sahih al-Bukhari · Book 80: Invocations · The invocation of the Prophet (saws) for his servant
Narrated Anas:
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ أَبِي الأَسْوَدِ ، حَدَّثَنَا حَرَمِيٌّ ، حَدَّثَنَا شُعْبَةُ ، عَنْ قَتَادَةَ ، عَنْ أَنَسٍ ـ رضى الله عنه ـ قَالَ قَالَتْ أُمِّي يَا رَسُولَ اللَّهِ خَادِمُكَ أَنَسٌ ادْعُ اللَّهَ لَهُ. قَالَ " اللَّهُمَّ أَكْثِرْ مَالَهُ وَوَلَدَهُ، وَبَارِكْ لَهُ فِيمَا أَعْطَيْتَهُ " .
My mother said, "O Allah's Messenger (ﷺ)! Please invoke Allah on behalf of your servant." He said, "O Allah! Increase his wealth and children, and bestow Your Blessing on whatever You give him." a time of distress.