Sahih al-Bukhari 1270
Sahih al-Bukhari · Book 23: Funerals (Al-Janaa'iz) · To shroud one in a shirt, stitched or unstitched
Narrated Jabir:
حَدَّثَنَا مَالِكُ بْنُ إِسْمَاعِيلَ ، حَدَّثَنَا ابْنُ عُيَيْنَةَ ، عَنْ عَمْرٍو ، سَمِعَ جَابِرًا ـ رضى الله عنه ـ قَالَ أَتَى النَّبِيُّ صلى الله عليه وسلم عَبْدَ اللَّهِ بْنَ أُبَىٍّ بَعْدَ مَا دُفِنَ فَأَخْرَجَهُ، فَنَفَثَ فِيهِ مِنْ رِيقِهِ وَأَلْبَسَهُ قَمِيصَهُ.
The Prophet (ﷺ) came to (the grave of) `Abdullah bin Ubai after his body was buried. The body was brought out and then the Prophet (ﷺ) put his saliva over the body and clothed it in his shirt.