Authentic
Sunan Abu Dawud 1023
One day the Messenger of Allah (ﷺ) prayed and gave the salutation while a rak'ah of the prayer remained to be offered. A man went to him and said: You forgot to offer one rak'ah of prayer. Then he returned and entered the mosque and ordered Bilal (to utter the Iqamah). He uttered the Iqamah for…
صَلَّى يَوْمًا فَسَلَّمَ وَقَدْ بَقِيَتْ مِنَ الصَّلاَةِ رَكْعَةٌ فَأَدْرَكَهُ رَجُلٌ فَقَالَ نَسِيتَ مِنَ الصَّلاَةِ رَكْعَةً فَرَجَعَ فَدَخَلَ الْمَسْجِدَ وَأَمَرَ بِلاَلاً فَأَقَامَ الصَّلاَةَ فَصَلَّى لِلنَّاسِ…