Hadithcore
Sunan an-Nasa'i, 2590
sahih· Darussalam

It was narrated that Thawban said:

"The Messenger of Allah said: 'Whoever can promise me one thing. Paradise will be his." (One of the narrators) Yahya said: "Here a statement which means: That he will not ask the people for anything."

أَخْبَرَنَا عَمْرُو بْنُ عَلِيٍّ، قَالَ حَدَّثَنَا يَحْيَى، قَالَ حَدَّثَنَا ابْنُ أَبِي ذِئْبٍ، حَدَّثَنِي مُحَمَّدُ بْنُ قَيْسٍ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ يَزِيدَ بْنِ مُعَاوِيَةَ، عَنْ ثَوْبَانَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏

‏ مَنْ يَضْمَنْ لِي وَاحِدَةً وَلَهُ الْجَنَّةُ ‏

‏ ‏.‏ قَالَ يَحْيَى هَا هُنَا كَلِمَةٌ مَعْنَاهَا أَنْ لاَ يَسْأَلَ النَّاسَ شَيْئًا ‏.‏

References2 variants
In-Book Reference
Book 23, Hadith 156
English Reference
Vol. 3, Book 23, Hadith 2591