Hadithcore
Al-Adab Al-Mufrad, 631

When Anas made supplication for his brother, he said, "May Allah bless him with the blessing of those who are pious. They are neither unjust nor corrupt. They stand at night in prayer and fast in the day."

حَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ، قَالَ‏:‏ حَدَّثَنَا سُلَيْمَانُ بْنُ الْمُغِيرَةِ، عَنْ ثَابِتٍ قَالَ‏:‏ كَانَ أَنَسٌ إِذَا دَعَا لأَخِيهِ يَقُولُ‏:‏ جَعَلَ اللَّهُ عَلَيْهِ صَلاَةَ قَوْمٍ أَبْرَارٍ لَيْسُوا بِظَلَمَةٍ وَلاَ فُجَّارٍ، يَقُومُونَ اللَّيْلَ، وَيَصُومُونَ النَّهَارَ‏.‏

References2 variants
In-Book Reference
Book 31, Hadith 28
English Reference
Book 31, Hadith 631