Prayer: Abandoning a Journey That Totals Eight Farsakhs with the Return Journey
Practical Laws of Islam as per the teachings of Ayatullah Sistani
Ruling 1273
If after travelling some of the way, which together with the return journey totals eight farsakhs, one abandons the journey, in the event that he decides to remain in that place or to return after ten days, or he is unsure about returning or staying there, he must perform tamām prayers.