https://www.islamweb.net/en/fatwa/91667/the-number-of-the-obligatory-prayers-is-something-known-a-priori
The number of the obligatory prayers is something known a priori
Explore the importance of the five obligatory daily prayers in Islam, as emphasized in the Quran and Sunnah. This page addresses the beliefs of the...
the numberobligatory prayerssomethingknownpriori
https://www.shia-islam.org/p/prayer-is-a-traveler-required-to
Prayer: Is a traveler required to shorten all obligatory prayers or only specific ones?
Practical Laws of Islam as per the teachings of Imam Khamenei