What is the established practice for Surah recitation in Maghrib and Isha prayers?
Chapter on the Description of Prayer
Al-Mughni
Book of Prayer
Primary text
In the Maghrib prayer, Ibn Umar narrated that the Prophet, peace be upon him, recited Surah Qul Ya Ayyuha Al-Kafirun and Surah Qul Huwa Allahu Ahad. In the Isha prayer during travel, Al-Bara' narrated that the Prophet, peace be upon him, recited Surah At-Tin wa Az-Zaytun. Furthermore, the Prophet, peace be upon him, instructed Mu'adh, in response to over-lengthening, that reciting Surah Ash-Shams wa Duha, Surah Ad-Duha, Surah Waddhuha, and Surah Sabbih Isma Rabbika Al-A'la would suffice.
Supporting text
The length of recitation varied according to circumstances. The Prophet, peace be upon him, would sometimes lengthen and sometimes shorten the recitation based on the situation. It is narrated that he said, "I begin the prayer intending to lengthen it, but upon hearing a child cry, I shorten it, fearing I might cause hardship to its mother."