Sahih al-Bukhari — Call to Prayers (Adhaan) — Hadith No: 792
Translation
Narrated Al-Bara:The bowing, the prostration the sitting in between the two prostrations and the standing after the bowing of the Prophet (ﷺ) but not qiyam (standing in the prayer) and qu`ud (sitting in the prayer) used to be approximately equal (in duration)