كتاب إقامة الصلاة والسنة فيها
5  
Establishing the Prayer and the Sunnah Regarding Them
(103)
Chapter: What was narrated concerning: Once the Iqamah has been called, there should be no Prayer except the obligatory one
(103)
باب مَا جَاءَ فِي إِذَا أُقِيمَتِ الصَّلاَةُ فَلاَ صَلاَةَ إِلاَّ الْمَكْتُوبَةُ
Sunan Ibn Majah 1152
It was narrated from ‘Abdullah bin Sarjis that the Messenger of Allah (ﷺ) saw a man performing the two Rak’ah before the morning prayer while he himself was performing prayer. When he had finished praying he said to him:
“Which of your two prayers did you intend to be counted (i.e., accepted)?”
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا أَبُو مُعَاوِيَةَ، عَنْ عَاصِمٍ، عَنْ عَبْدِ اللَّهِ بْنِ سَرْجِسَ، أَنَّ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ رَأَى رَجُلاً يُصَلِّي الرَّكْعَتَيْنِ قَبْلَ صَلاَةِ الْغَدَاةِ وَهُوَ فِي الصَّلاَةِ فَلَمَّا صَلَّى قَالَ لَهُ: ‏ "‏ بِأَىِّ صَلاَتَيْكَ اعْتَدَدْتَ؟ ‏"‏ ‏.‏
Grade: Sahih (Darussalam)
Reference : Sunan Ibn Majah 1152
In-book reference : Book 5, Hadith 350
English translation : Vol. 1, Book 5, Hadith 1152