That he heard Talhah bin 'Ubaidullah say: "A man from Najd with unkempt hair came to the Messenger of Allah [SAW]; he was speaking loudly but his speech could not be understood until he came close. He was asking about Islam. The Messenger of Allah [SAW] said: 'Five prayers every day and night.' He said: 'Do I have to do any more than that? He said: 'No, not unless you do it voluntarily.' The Messenger of Allah [SAW] said: 'Fasting the month of Ramadan.' He said: 'Do I have to do any more than that?' He said: 'No, not unless you do it voluntarily.' Then the Messenger of Allah [SAW] told him about Zakah. He said: 'Do I have to do any more than that?' He said: 'No, not unless you do it voluntarily.' The man left saying, 'I will not do any more than that or any less.' The Messenger of Allah [SAW] said: 'He will succeed, if he is telling the truth.'"  

أَنَّهُ سَمِعَ طَلْحَةَ بْنَ عُبَيْدِ اللَّهِ يَقُولُ جَاءَ رَجُلٌ إِلَى رَسُولِ اللَّهِ ﷺ مِنْ أَهْلِ نَجْدٍ ثَائِرَ الرَّأْسِ يُسْمَعُ دَوِيُّ صَوْتِهِ وَلَا يُفْهَمُ مَا يَقُولُ حَتَّى دَنَا فَإِذَا هُوَ يَسْأَلُ عَنْ الْإِسْلَامِ قَالَ لَهُ رَسُولُ اللَّهِ ﷺ خَمْسُ صَلَوَاتٍ فِي الْيَوْمِ وَاللَّيْلَةِ قَالَ هَلْ عَلَيَّ غَيْرُهُنَّ قَالَ لَا إِلَّا أَنْ تَطَوَّعَ قَالَ رَسُولُ اللَّهِ ﷺ وَصِيَامُ شَهْرِ رَمَضَانَ قَالَ هَلْ عَلَيَّ غَيْرُهُ قَالَ لَا إِلَّا أَنْ تَطَوَّعَ وَذَكَرَ لَهُ رَسُولُ اللَّهِ ﷺ الزَّكَاةَ فَقَالَ هَلْ عَلَيَّ غَيْرُهَا قَالَ لَا إِلَّا أَنْ تَطَوَّعَ فَأَدْبَرَ الرَّجُلُ وَهُوَ يَقُولُ لَا أَزِيدُ عَلَى هَذَا وَلَا أَنْقُصُ مِنْهُ فَقَالَ رَسُولُ اللَّهِ ﷺ أَفْلَحَ إِنْ صَدَقَ