صحيح ابن خزيمه
Sahih Ibn Khuzaymah
جماع أبواب الأذان والإقامةChapters on Adhan and Iqamah
(35) بَابُ الْأَمْرِ بِالْأَذَانِ لِلصَّلَاةِ قَائِمًا لَا قَاعِدًا،Chapter 35: Command to call the adhan standing, not sitting
Hadith 364
قَالَ أَبُو بَكْرٍ: فِي خَبَرِ نَافِعٍ، عَنِ ابْنِ عُمَرَ، فَقَالَ رَسُولُ اللَّهِ صَلَّى اللهُ عَلَيْهِ وَسَلَّمَ: «قُمْ يَا بِلَالُ فَنَادِ بِالصَّلَاةِ»
Imam Abu Bakr (may Allah have mercy on him) says that in the narration of Sayyiduna Ibn Umar (may Allah be pleased with them both), the Messenger of Allah (peace and blessings be upon him) said: "O Bilal, stand up and call the adhan for the prayer."
