Muwatta Imam Malik (Riwayat Ibn al-Qasim)

It is narrated from Sayyiduna Rifa’ah bin Rafi’ al-Zuraqi (may Allah be pleased with him) that one day we were praying behind the Messenger of Allah (peace and blessings be upon him). When the Messenger of Allah (peace and blessings be upon him) raised his head from bowing (ruku’) and said: «سَمِعَ اللهُ لِمَنْ حَمِدَهُ» “Allah has heard the one who praises Him,” a man praying behind the Messenger of Allah (peace and blessings be upon him) said: «رَبَّنَا وَلَكَ الْحَمْدُ حَمْدًا كَثِيرًا طَيِّبًا مُبَارَكًا فِيهِ» “O our Lord! And to You alone is all praise, abundant, pure, and blessed.” When the Messenger of Allah (peace and blessings be upon him) finished the prayer with salam, he said: “Who spoke just now (in the prayer)?” A man said: “I did, O Messenger of Allah!” So the Messenger of Allah (peace and blessings be upon him) said: “I saw more than thirty (30) angels racing to be the first to write it down.”