"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." (Using translation from Nasāʾī 2590)   

قَالَ رَسُولُ اللهِ ﷺ «مَنْ يَضْمَنُ لِي وَاحِدَةً وَلَهُ الْجَنَّةُ؟» قَالَ يَحْيَى قَالَ هَاهُنَا كَلِمَةً مَعْنَاهَا أَلَّا يَسْأَلَ النَّاسَ شَيْئًا  

"I heard the Messenger of Allah says: 'It is not right to ask (for help) except in three cases: A man whose wealth has been destroyed by some calamity, so he asks until he gets enough to keep him going, then he refrains from asking: a man who undertakes a financial responsibility, and asks for help until he pays off whatever needs to be paid; and a man concerning whom three wise men from his own people swear by Allah that it is permissible for so-an-so to ask for help, so he asks until he has enough to be independent of means, then he refrains from asking. Apart from that. (asking) is unlawful."' (Using translation from Nasāʾī 2591)  

سَمِعْتُ النَّبِيَّ ﷺ يَقُولُ لَا تَصْلُحُ الْمَسْأَلَةُ إِلَّا لِثَلَاثَةٍ رَجُلٍ أَصَابَتْ مَالَهُ حَالِقَةٌ فَيَسْأَلُ حَتَّى يُصِيبَ سِدَادًا مِنْ عَيْشٍ ثُمَّ يُمْسِكُ وَرَجُلٍ تَحَمَّلَ بِحَمَالَةٍ بَيْنَ قَوْمٍ فَيَسْأَلُ حَتَّى يُؤَدِّيَ إِلَيْهِمْ حَمَالَتَهُمْ ثُمَّ يُمْسِكُ عَنِ الْمَسْأَلَةِ وَرَجُلٍ يَحْلِفُ ثَلَاثَةُ نَفَرٍ مِنْ قَوْمِهِ مِنْ ذَوِي الْحِجَا بِاللهِ لَقَدْ حَلَّتِ الْمَسْأَلَةُ لِفُلَانٍ فَيَسْأَلُ حَتَّى يُصِيبَ قِوَامًا مِنْ مَعِيشَةٍ ثُمَّ يُمْسِكُ عَنِ الْمَسْأَلَةِ فَمَا سِوَى ذَلِكَ سُحْتٌ