Sahih al-Bukhari 6038

Arabic

حَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ، سَمِعَ سَلاَّمَ بْنَ مِسْكِينٍ، قَالَ سَمِعْتُ ثَابِتًا، يَقُولُ حَدَّثَنَا أَنَسٌ ـ رضى الله عنه ـ قَالَ خَدَمْتُ النَّبِيَّ صلى الله عليه وسلم عَشْرَ سِنِينَ، فَمَا قَالَ لِي أُفٍّ‏.‏ وَلاَ لِمَ صَنَعْتَ وَلاَ أَلاَّ صَنَعْتَ‏.‏

English translation

Narrated Anas:I served the Prophet (ﷺ) for ten years, and he never said to me, "Uf" (a minor harsh word denoting impatience) and never blamed me by saying, "Why did you do so or why didn't you do so?

Reference: Sahih al-Bukhari 6038, Book of Good Manners and Form (Al-Adab). English translation by Dr. Muhammad Muhsin Khan.