The Messenger of Allah (ﷺ) used to pray two brief rak'ahs between the Adhan and Iqamah for Fajr prayer.
Sunan an-Nasa'i Book 20, Hadith 183
← Previous Hadith "Hafsah told me that when dawn glowed, the Messenger of Allah (ﷺ) would pray two rak'ahs."

Sunan an-Nasa'i Book 20, Hadith 182 Next Hadith → He asked Aishah about the prayer of the Messenger of Allah (ﷺ) at night. She said: "He used to pray thirteen rak'ahs. He would pray eight rak'ahs then pray witr, then pray two rak'ahs sitting down. When he wanted to bow he would stand and bow, and he prayed two rak'ahs between the adhan and iqamah of subh prayer.

Sunan an-Nasa'i Book 20, Hadith 184