Hadith 569
وَحَدَّثَنِي عَنْ مَالِك عَنْ ابْنِ شِهَابٍ عَنْ عَبْدِ الرَّحْمَنِ بْنِ كَعْبِ بْنِ مَالِكٍ الْأَنْصَارِيِّ أَنَّهُ أَخْبَرَهُ أَنَّ أَبَاهُ كَعْبَ بْنَ مَالِكٍ كَانَ يُحَدِّثُ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ إِنَّمَا نَسَمَةُ الْمُؤْمِنِ طَيْرٌ يَعْلَقُ فِي شَجَرِ الْجَنَّةِ حَتَّى يَرْجِعَهُ اللَّهُ إِلَى جَسَدِهِ يَوْمَ يَبْعَثُهُ
Yahya related to me from Malik from Ibn Shihab that Abd ar-Rahman ibn Kab ibn Malik al-Ansari told him that his father, Kab ibn Malik, used to relate that the Messenger of Allah, may Allah bless him and grant him peace, said, "The ruh of the mumin is a bird that sits in the trees of the Garden until Allah returns it to his body on the day He raises him
Sahih (Salim al-Hilali)
Muwatta Malik 569 · Book 16, Hadith 50