Sahih Muslim , Book 38, Hadith 6678 (USC-MSA) ⓘ
Jabir reported Allah's Apostle came to the grave of 'Abdullah b. Ubayy, brought him out from that, placed him on his knee and put his saliva in his mouth and shrouded him in his own shirt and Allah knows best.
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، وَزُهَيْرُ بْنُ حَرْبٍ، وَأَحْمَدُ بْنُ عَبْدَةَ الضَّبِّيُّ، - وَاللَّفْظُ لاِبْنِ أَبِي شَيْبَةَ - قَالَ ابْنُ عَبْدَةَ أَخْبَرَنَا وَقَالَ الآخَرَانِ، حَدَّثَنَا سُفْيَانُ بْنُ عُيَيْنَةَ، عَنْ عَمْرٍو، أَنَّهُ سَمِعَ جَابِرًا، يَقُولُ أَتَى النَّبِيُّ صلى الله عليه وسلم قَبْرَ عَبْدِ اللَّهِ بْنِ أُبَىٍّ فَأَخْرَجَهُ مِنْ قَبْرِهِ فَوَضَعَهُ عَلَى رُكْبَتَيْهِ وَنَفَثَ عَلَيْهِ مِنْ رِيقِهِ وَأَلْبَسَهُ قَمِيصَهُ فَاللَّهُ أَعْلَمُ .
also referenced under: Book 51, Hadith 2 (In-Book) & Hadith 2773 (Reference)