عَنْ زَيْدِ بْنِ أَرْقَمَ رَضِيَ اللَّهُ عَنْهُ قَالَ كَانَ الرَّجُلُ يُكَلِّمُ صَاحِبَهُ عَلَى عَهْدِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ فِي الْحَاجَةِ فِي الصَّلَاةِ حَتَّى نَزَلَتْ هَذِهِ الْآيَةُ وَقُومُوا لِلَّهِ قَانِتِينَ [سورة البقرة: ٢٣٨] فَأُمِرْنَا بِالسُّكُوتِ
Sayyiduna Zayd bin Arqam (may Allah be pleased with him) narrates that during the blessed era of the Prophet Muhammad (peace and blessings be upon him), a person could speak about his needs during prayer, until this verse was revealed: {وَقُوْمُوْا لِلّٰہِ قَانِتِیْنَ} … and stand before Allah with devotion. Thus, we were commanded to remain silent in prayer.