https://torontodawah.com/is-it-permissible-to-pray-the-sunnah-al-raatibah-that-come-before-the-prayer-before-the-adhan-shaykh-ibn-uthaymeen/
Is It Permissible To Pray The Sunnah Al-Raatibah That Come Before The Prayer Before The Adhan – Shaykh Ibn Uthaymeen