Muhammad.com collection in 109 languages

  • Nawawi_14_Prayer, page : 15

”The Messenger of Allah, praise and peace be upon him, would
make two short units of prayer between the Adhan and the Iqamah
of the dawn prayer.

He offered the two units of prayer so quickly that I wondered
whether he had recited Al Fatihah."

Bukhari and Muslim with a chain up to Lady Ayesha, wife of the Prophet, may Allah
be pleased with her, the Mother of Believers who related this.

BRIEF VOLUNTARY PRAYER BEFORE DAWN

|H 1124

“He would make two voluntary units of prayer when he heard the
Adhan and made them brief.”

Also