Ibn 'Umar reported Allah's Messenger (ﷺ) as saying:
When the rim of the sun starts appearing defer prayer till it completely appears, and when the rim of the sun disappears defer prayer till it completely disappears.
Reference: Sahih Muslim 829 In-book : Book 6, Hadith 354 USC-MSA web (English) : Book 4, Hadith 1808 (deprecated)
Help us gift a modern, ad-free Islamic application for the Muslim Ummah. Your donation will be recorded as Sadaqah Jariyah in your book of deeds, In Sha Allah.