Jami` at-Tirmidhi 3751
جامع الترمذي#3751Sahihحَدَّثَنَا رَجَاءُ بْنُ مُحَمَّدٍ الْعُذْرِيُّ، - بَصْرِيٌّ - قَالَ حَدَّثَنَا جَعْفَرُ بْنُ عَوْنٍ، عَنْ إِسْمَاعِيلَ ابْنِ أَبِي خَالِدٍ، عَنْ قَيْسِ بْنِ أَبِي حَازِمٍ، عَنْ سَعْدٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " اللَّهُمَّ اسْتَجِبْ لِسَعْدٍ إِذَا دَعَاكَ " . وَقَدْ رُوِيَ هَذَا الْحَدِيثُ عَنْ إِسْمَاعِيلَ عَنْ قَيْسٍ أَنَّ النَّبِيَّ صلى الله عليه وسلم قَالَ " اللَّهُمَّ اسْتَجِبْ لِسَعْدٍ إِذَا دَعَاكَ " . وَهَذَا أَصَحُّ .
Narrated Sa'd:that the Messenger of Allah (ﷺ) said: "O Allah, respond to Sa'd when he supplicates to You
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: 49:148