(Saba'a) 34 : 18
وَجَعَلْنَا بَيْنَهُمْ وَبَيْنَ الْقُرَى الَّتِي بَارَكْنَا فِيهَا قُرًى ظَاهِرَةً وَقَدَّرْنَا فِيهَا السَّيْرَ ۖ سِيرُوا فِيهَا لَيَالِيَ وَأَيَّامًا آمِنِينَ
And We made cities between them and the city We have blessed clear cities, and We fixed the distance of journey between cities; you travel along it day and night safely.
The blessed city mentioned in the verse is Palestine. There were small countries between Saba’a and Palestine. While they were on a journey to Palestine and returning to Saba’a for business purposes, they used to rest and do business in these small countries. They could also travel day and night. That means they could save the journey time and could make earnings by doing business in the cities they cover during their journey.