[Machine] The Messenger of Allah, ﷺ , said that "al-Istijmar" is a purification method, and "al-Ramy" (stoning the pillars) is a purification method, and the "Sa'y" (walking) between Safa and Marwa is a purification method, and "Tawaf" (circumambulation) is a purification method. And when one of you performs "al-Istijmar", then let him perform it with a "Taww" (an odd number of stones), as stated by Al-Ruzbary in his narration. And "al-Taww" is the "Witr" (an odd number).
قَالَ رَسُولُ اللهِ ﷺ الِاسْتِجْمَارُ تَوٌّ وَرَمْيُ الْجِمَارِ تَوٌّ وَالسَّعْيُ بَيْنَ الصَّفَا وَالْمَرْوَةِ تَوٌّ وَالطَّوَافُ تَوٌّ وَإِذَا اسْتَجْمَرَ أَحَدُكُمْ فَلْيَسْتَجْمِرْ بِتَوٍّ لَفْظُهُمَا سَوَاءٌ زَادَ الرُّوذْبَارِيُّ فِي رِوَايَتِهِ وَالتَّوُّ الْوِتْرُ