Jami` at-Tirmidhi 388
جامع الترمذي#388Sahihحَدَّثَنَا أَبُو عَمَّارٍ، حَدَّثَنَا الْوَلِيدُ، قَالَ وَحَدَّثَنَا أَبُو مُحَمَّدٍ، رَجَاءٌ قَالَ حَدَّثَنَا الْوَلِيدُ بْنُ مُسْلِمٍ، عَنِ الأَوْزَاعِيِّ، قَالَ حَدَّثَنِي الْوَلِيدُ بْنُ هِشَامٍ الْمُعَيْطِيُّ، قَالَ حَدَّثَنِي مَعْدَانُ بْنُ طَلْحَةَ الْيَعْمَرِيُّ، قَالَ لَقِيتُ ثَوْبَانَ مَوْلَى رَسُولِ اللَّهِ صلى الله عليه وسلم فَقُلْتُ لَهُ دُلَّنِي عَلَى عَمَلٍ يَنْفَعُنِي اللَّهُ بِهِ وَيُدْخِلُنِي الْجَنَّةَ فَسَكَتَ عَنِّي مَلِيًّا ثُمَّ الْتَفَتَ إِلَىَّ فَقَالَ عَلَيْكَ بِالسُّجُودِ فَإِنِّي سَمِعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ " مَا مِنْ عَبْدٍ يَسْجُدُ لِلَّهِ سَجْدَةً إِلاَّ رَفَعَهُ اللَّهُ بِهَا دَرَجَةً وَحَطَّ عَنْهُ بِهَا خَطِيئَةً " .
Ma'dan bin Talhah Al Yamari said:"I met Thawban the freed slave of Allah's Messenger (S) and said to him, 'Guide me to a deed by which Allah benefit me, and for which Allah will admit me into Paradise.' He was silent for quite a while, then he turned to me and said: 'Perform prostrations, for I heard Allah's Messenger (S) saying: 'No worshipper performs a prostration to Allah except that by it, Allah will raise him a level, and erase a sin from him for it
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: 2:240