Jami` at-Tirmidhi 4
جامع الترمذي#4Sahihحَدَّثَنَا أَبُو بَكْرٍ، مُحَمَّدُ بْنُ زَنْجَوَيْهِ الْبَغْدَادِيُّ وَغَيْرُ وَاحِدٍ قَالَ حَدَّثَنَا الْحُسَيْنُ بْنُ مُحَمَّدٍ، حَدَّثَنَا سُلَيْمَانُ بْنُ قَرْمٍ، عَنْ أَبِي يَحْيَى الْقَتَّاتِ، عَنْ مُجَاهِدٍ، عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ، رضى الله عنهما قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " مِفْتَاحُ الْجَنَّةِ الصَّلاَةُ وَمِفْتَاحُ الصَّلاَةِ الْوُضُوءُ " .
Jabir bin 'Abdullah, may Allah be pleased with them, narrated that :Allah's Messenger said: "The key to Paradise is Salat, and the key to Salat is Wudu
Scholarly Authentication
The label above is the grade most of these scholars gave, each scholar counted once — 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. When they judged only its chain of narrators (“Isnaad”), the label says “Sound chain”. Each scholar's own wording:
Our source also lists this ruling under Ahmad Muhammad Shakir, the editor of the printed edition it was taken from. It is al-Albani's ruling printed again, so it is counted once.
In-book reference: 1:4