عَنْ نَافِعٍ قَالَ: سَمِعْتُ ابْنَ عُمَرَ يَقُولُ: نَهَى رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَنْ يُقِيمَ الرَّجُلُ الرَّجُلَ مِنْ مَقْعَدِهِ وَيَجْلِسَ فِيهِ. قِيلَ لِنَافِعٍ: فِي الْجُمُعَةِ قَالَ: فِي الْجُمُعَة وَغَيرهَا

Ibn ‘Abbas reported God’s Messenger as saying, “If anyone speaks on Friday while the imam is preaching, he is like an ass which carries books, (cf. Al-Qur'an; 62:5) and he who tells him to be quiet is not credited with the Friday prayer.” Ahmad transmitted it.