سنن النسائي

It was narrated from Mu'adh bin Rifa'ah bin Rafi' that : His father said: "I prayed behind the Prophet (ﷺ) and I sneezed and said: 'Al-hamdu lillahi, hamdan kathiran tayiban mubarakan fih, mubarakan'alaihi, kama yuhibbu rabbuna wa yarda (Praise be to Allah, much good and blessed praise as our Lord loves and is pleased with.)' When he finished praying, the Messenger of Allah (ﷺ) said: 'Who is the one who spoke during the prayer?' But no one said anything. Then he said it a second time: 'Who is the one who spoke during the prayer?' So Rifa'ah bin Rafi bin Afrah said: 'It was me, O Messenger of Allah.' He said: 'I said: "Praise be to Allah, much good and blessed praise as our Lord loves and is pleased with.'" The Prophet (ﷺ) said: 'By the One in Whose hand is my soul, thirty-odd angels hastened to see which of them would take it up.'"