Not graded
Musnad Ahmad 18830
Narrator:Abu Mūsa al-Ash‘ari
قَالَ وَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِنَّمَا سُمِّيَ الْقَلْبُ مِنْ تَقَلُّبِهِ إِنَّمَا مَثَلُ الْقَلْبِ كَمَثَلِ رِيشَةٍ مُعَلَّقَةٍ فِي أَصْلِ شَجَرَةٍ يُقَلِّبُهَا الرِّيحُ ظَهْرًا لِبَطْنٍ
This hadith has no English translation yet: the Arabic text, the reference and the grade are shown here.
Reported by Ahmad (No. 18830).