It wasnarrated that 'Abdullah bin Malik bin Buhainah said:
"TheProphet(ﷺ) passed by a man who was praying when the Iqamah for Subhprayerhad been called, and he said something to him, I do not knowwhat hesaid. When he finished, we surrounded the man and asked him:'Whatdid the Messenger of Allah (ﷺ) say to you?' He said: 'He saidto me: "Soon one of you will pray Fajr with four Rak'ah.'" (AR)
English reference (AR): Vol. 1, Book 5, Hadith 1153 (AR)
Arabic reference (AR): Book 5, Hadith 1208 (AR)