عَنْ عُقْبَةَ بْنِ عَامِرٍ الْجُهَنِيِّ رَضِيَ اللَّهُ عَنْهُ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ قَالَ إِذَا اكْتَحَلَ أَحَدُكُمْ فَلْيَكْتَحِلْ وِتْرًا وَإِذَا اسْتَجْمَرَ فَلْيَسْتَجْمِرْ وِتْرًا
Sayyiduna Uqbah bin Amir Juhani (may Allah be pleased with him) narrates that the Noble Prophet (peace and blessings be upon him) said: Whenever any of you applies kohl, let him apply it an odd number of times, and when he performs istinja with stones, let him use an odd number of stones.