When anyone wipes himself with pebbles (after answering the call of nature) he must make use of an odd number and when any one of you performs ablution he must snuff in his nose water and then clean it.  

النَّبِيَّ ﷺ قَالَ إِذَا اسْتَجْمَرَ أَحَدُكُمْ فَلْيَسْتَجْمِرْ وِتْرًا وَإِذَا تَوَضَّأَ أَحَدُكُمْ فَلْيَجْعَلْ فِي أَنْفِهِ مَاءً ثُمَّ لْيَنْتَثِرْ  

This is what Abu Huraira transmitted to us from Muhammad, the Messenger of Allah ﷺ, and he mentioned a number of a hadith, of which this is one: that the Messenger of Allah ﷺ said: When anyone amongst you (performs ablution) he must snuff his nostrils with water and then clean them.  

عَنْ مُحَمَّدٍ رَسُولِ اللَّهِ ﷺ فَذَكَرَ أَحَادِيثَ مِنْهَا وَقَالَ رَسُولُ اللَّهِ ﷺ إِذَا تَوَضَّأَ أَحَدُكُمْ فَلْيَسْتَنْشِقْ بِمَنْخِرَيْهِ مِنَ الْمَاءِ ثُمَّ لْيَنْتَثِرْ  

The Messenger of Allah (way peace he upon him) said: When anyone performs ablution he must clean his nose and when anyone wipes himself with pebbles (after answering the call of nature) he must do that odd number of times.  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ مَنْ تَوَضَّأَ فَلْيَسْتَنْثِرْ وَمَنِ اسْتَجْمَرَ فَلْيُوتِرْ  

It has been transmitted by Abu Huraira and Abu Sa'id al-Khudri (both of them the reputed Companions of the Holy Prophet) that the Messenger of Allah ﷺ said like that.  

أَنَّهُ سَمِعَ أَبَا هُرَيْرَةَ وَأَبَا سَعِيدٍ الْخُدْرِيَّ يَقُولاَنِ قَالَ رَسُولُ اللَّهِ ﷺ بِمِثْلِهِ  

The Apostle of Allah ﷺ said. When any one of you awakes up from sleep and performs ablution, he must clean his nose three times, for the devil spends the night in the interior of his nose.  

أَنَّ النَّبِيَّ ﷺ قَالَ إِذَا اسْتَيْقَظَ أَحَدُكُمْ مِنْ مَنَامِهِ فَلْيَسْتَنْثِرْ ثَلاَثَ مَرَّاتٍ فَإِنَّ الشَّيْطَانَ يَبِيتُ عَلَى خَيَاشِيمِهِ  

When anyone wipes himself with pebbles (after answering the call of nature) he should do this odd number of times.  

قَالَ رَسُولُ اللَّهِ ﷺ إِذَا اسْتَجْمَرَ أَحَدُكُمْ فَلْيُوتِرْ