1. There are certain surahs which have been prescribed to be recited at specific times during the night and day or during certain days of the week. It is mustahab for one to recite these surahs at their prescribed times.
d) One should recite Surah Yaaseen in the morning and in the night
عن الحسن عن جندب رضي الله عنه قال : قال رسول الله صلى الله عليه و سلم : من قرأ يس في ليلة ابتغاء وجه الله غفر له. (صحيح ابن حبان رقم 2574)
Hazrat Jundub (radhiyallahu ‘anhu) reports that Rasulullah (sallallahu ‘alaihi wasallam) said: “Whoever recites Surah Yaaseen at night with the intention of seeking the pleasure of Allah Ta’ala, his (minor) sins will be forgiven.”
عن شهر بن حوشب، قال: قال ابن عباس: من قرأ يس حين يصبح، أعطي يسر يومه حتى يمسي، ومن قرأها في صدر ليله، أعطي يسر ليلته حتى يصبح (سنن الدارمي رقم 3462)
Hazrat Ibn ‘Abbaas (Radhiyallahu Anhuma) reports: “Whoever recites Surah Yaaseen in the morning, his work for that entire day will be made easy and whoever recites it at the end of the day, his work till the next morning will be made easy.”