I observed the Messenger of Allah ﷺ closely during his prayer, and I found that his standing, his bowing, his pause after bowing, his prostration, his sitting between the two prostrations, his second prostration, and his sitting between the final salutation and rising were all nearly equal in length.
أخبرنا أحمد بن سليمان قال حدثنا عمرو بن عون قال حدثنا أبو عوانة عن هلال عن عبد الرحمن بن أبي ليلى
رمقت رسول الله ﷺ في صلاته فوجدت قيامه وركعته واعتداله بعد الركعة فسجدته فجلسته بين السجدتين فسجدته فجلسته بين التسليم والانصراف قريبا من السواء
Reported by Muslim, Prayer, chapter on evenness of the pillars of prayer and keeping them brief while performing them fully, hadith no. 471, from the hadith of Abu Awana Waddah bin Abdullah, with the same chain, and it is also in Kubra, hadith no. 1255.