Not graded
Musnad Ahmad 8688
وَبِهَذَا الْإِسْنَادِ أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَكَلَ كَتِفَ شَاةٍ فَمَضْمَضَ وَغَسَلَ يَدَهُ وَصَلَّى
This hadith has no English translation yet: the Arabic text, the reference and the grade are shown here.
Reported by Ahmad (No. 8688).