Muwatta Malik 180
موطأ مالك#180SahihThese are the words of a Successor — the generation after the Companions — not of the Prophet ﷺ.
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ يَزِيدَ بْنِ رُومَانَ، أَنَّهُ قَالَ كُنْتُ أُصَلِّي إِلَى جَانِبِ نَافِعِ بْنِ جُبَيْرِ بْنِ مُطْعِمٍ فَيَغْمِزُنِي فَأَفْتَحُ عَلَيْهِ وَنَحْنُ نُصَلِّي .
Yahya related to me from Malik that Yazid ibn Ruman said, "I used to pray next to Nafi ibn Jubayr ibn Mutim and he would nudge me to prompt him while we were praying
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:
Salim al-HilaliMaqtu Sahih
In-book reference: 3:13