Al-Kāfi #301“Abu ‘Abd Allah (a.s.), has said, ‘If they can see the crescent before Zawal (declining of the sun toward the west at noontime), then it is...
Man Lā Yaḥḍuruh al-Faqīh #346"If the crescent sets before twilight, it is for one night. If it sets after twilight, it is for two nights."
Al-Kāfi #302“Abu ‘Abd Allah (a.s.), has said that if the crescent forms a crown around it, then it is two nights old and if you can see the shadow of...