Sunan an Nasai
2154
Sahih Isnaad+2

It was narrated that Silah bin Zufar said:"I had Sahur with Hudhaifah, then we went out to the Masjid. We prayed the two Rakahs of Fajr, then the Iqamah for prayer was made, and we prayed

Sahih IsnaadAbu Ghuddah
Sahih IsnaadAl-Albani