وَيُكْرَهُ أَنْ يَتَنَفَّلَ بَعْدَ طُلُوعِ الْفَجْرِ بِأَكْثَرَ مِنْ رَكْعَتَيِ الْفَجْرِ،
Translation: After dawn, it is disliked to offer voluntary prayers beyond the two rak‘ahs of Fajr.
From true dawn, extra voluntary prayers beyond the two Sunnah rak‘ahs of Fajr are disliked even before the obligatory Fajr has been performed. After Fajr itself, the separate post-prayer prohibition applies.