What was the measure of the Prophet's—may Allah's prayers and peace be upon him—recitation in the obligatory and supererogatory prayers?

The Prophet, peace and blessings be upon him, used to prolong the recitation in Fajr and Dhuhr prayers, be moderate in Asr and Isha, and shorten it in Maghrib. Sometimes he would prolong or shorten it depending on the circumstances, as narrated by Abu Hurairah, may Allah be pleased with him. Ibn Uthaymeen mentioned that the long chapters of Al-Mufassal extend from "Qaf" to "Amma," its medium chapters from "Amma" to "Ad-Duha," and its short chapters from "Ad-Duha" to the end. Scholars have agreed that Fajr prayer has the longest recitation among the prayers. Ibn Battal was of the view that adhering to shortening the recitation nowadays is better due to people's circumstances. Ibn Taymiyyah said that it is best for the Imam to emulate the prayer of the Prophet, peace and blessings be upon him, reciting between sixty and a hundred verses in Fajr, but he would sometimes shorten it for a benefit, such as a child crying.