Sunan an-Nasa'i 1901
سنن النسائي#1901Sahihأَخْبَرَنَا عَبْدُ الْجَبَّارِ بْنُ الْعَلاَءِ بْنِ عَبْدِ الْجَبَّارِ، عَنْ سُفْيَانَ، عَنْ عَمْرٍو، قَالَ سَمِعْتُ جَابِرًا، يَقُولُ أَتَى النَّبِيُّ صلى الله عليه وسلم قَبْرَ عَبْدِ اللَّهِ بْنِ أُبَىٍّ وَقَدْ وُضِعَ فِي حُفْرَتِهِ فَوَقَفَ عَلَيْهِ فَأَمَرَ بِهِ فَأُخْرِجَ لَهُ فَوَضَعَهُ عَلَى رُكْبَتَيْهِ وَأَلْبَسَهُ قَمِيصَهُ وَنَفَثَ عَلَيْهِ مِنْ رِيقِهِ وَاللَّهُ تَعَالَى أَعْلَمُ .
It was narrated from Sufyan, from 'Amr who said he heard Jabir say:"The Prophet came to the grave of 'Abdullah bin Ubayy when he had been placed in his grave and stood over it. He commanded that he be brought out to him and placed on his knees, and he dressed him in his shirt and blew on him (for blessing). And Allah knows best
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 21:84