It was narrated from Hafsah bint ‘Umar that when the call for the Subh prayer was given, the Messenger of Allah ﷺ would pray two short Rak’ah before going to the prayer. (Using translation from Ibn Mājah 1145)
عَنْ رَسُولِ اللهِ ﷺ «أَنَّهُ كَانَ إِذَا نُودِيَ لِصَلَاةِ الصُّبْحِ رَكَعَ رَكْعَتَيْنِ خَفِيفَتَيْنِ قَبْلَ أَنْ يَقُومَ إِلَى الصَّلَاةِ»