حَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ، حَدَّثَنَا أَبَانُ، حَدَّثَنَا عَاصِمٌ، عَنْ أَبِي وَائِلٍ، عَنْ عَبْدِ اللَّهِ، قَالَ كُنَّا نُسَلِّمُ فِي الصَّلاَةِ وَنَأْمُرُ بِحَاجَتِنَا فَقَدِمْتُ عَلَى رَسُولِ اللَّهِ صلى الله عليه وسلم وَهُوَ يُصَلِّي فَسَلَّمْتُ عَلَيْهِ فَلَمْ يَرُدَّ عَلَىَّ السَّلاَمَ فَأَخَذَنِي مَا قَدُمَ وَمَا حَدُثَ فَلَمَّا قَضَى رَسُولُ اللَّهِ صلى الله عليه وسلم الصَّلاَةَ قَالَ ‏"‏إِنَّ اللَّهَ يُحْدِثُ مِنْ أَمْرِهِ مَا يَشَاءُ وَإِنَّ اللَّهَ جَلَّ وَعَزَّ قَدْ أَحْدَثَ مِنْ أَمْرِهِ أَنْ لاَ تَكَلَّمُوا فِي الصَّلاَةِ ‏"‏ ‏.‏ فَرَدَّ عَلَىَّ السَّلاَمَ

Narrated Abdullah ibn Mas'ud

We used to greet one another with peace during the prayer and give instructions regarding our needs. Then I came to the Messenger of Allah (ﷺ) while he was praying, and I greeted him with peace, but he did not return the greeting to me. Thoughts of what had befallen me in the past and what had newly occurred overcame me. When the Messenger of Allah (ﷺ) finished his prayer, he said, “Verily, Allah brings about whatever He wills of His command, and verily, Allah, the Mighty and Majestic, has brought about the command that you must not speak during the prayer.” Then he returned the greeting of peace to me.