Yahya related to me from Malik from Sharik ibn Abdullah ibn Abi
Namir that Abu Salama ibn Abd ar-Rahman said, "Some people heard the
iqama and started to pray. The Messenger of Allah, may Allah bless him
and grant him peace, came out and said, 'Are you doing two prayers at
the same time? Are you doing two prayers at the same time?' That was
about the subh prayer and the two rakas before subh."
Muwatta Malik Book 7, Hadith 31