Muwatta Malik 421
موطأ مالك#421Da'ifThese are the words of a Successor — the generation after the Companions — not of the Prophet ﷺ.
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ يَحْيَى بْنِ سَعِيدٍ، أَنَّهُ قَالَ بَلَغَنِي أَنَّ أَوَّلَ، مَا يُنْظَرُ فِيهِ مِنْ عَمَلِ الْعَبْدِ الصَّلاَةُ فَإِنْ قُبِلَتْ مِنْهُ نُظِرَ فِيمَا بَقِيَ مِنْ عَمَلِهِ وَإِنْ لَمْ تُقْبَلْ مِنْهُ لَمْ يُنْظَرْ فِي شَىْءٍ مِنْ عَمَلِهِ .
Yahya related to me from Malik that Yahya ibn Said said, "I have heard that the first of the actions of a slave to be considered on the day of rising is the prayer. If it is accepted from him, the rest of his actions will be considered, and if it is not accepted from him, none of his actions will be considered
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: 9:96