وَيَجِبُ طَلَبُ الْمَاءِ إِلَى مِقْدَارِ أَرْبَعِمِائَةِ خُطْوَةٍ إِنْ ظَنَّ قُرْبَهُ مَعَ الْأَمْنِ
If water is reasonably thought to be nearby and the search is safe, it is obligatory to search up to 400 paces. The text does not describe this simply as a modern circular 'radius'; the practical rule is the stated search distance under safety and likelihood.
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Tayammum: Pillars, Sunnahs, Water Search, and Invalidators
وَيَجِبُ طَلَبُ الْمَاءِ إِلَى مِقْدَارِ أَرْبَعِمِائَةِ خُطْوَةٍ إِنْ ظَنَّ قُرْبَهُ مَعَ الْأَمْنِ
If water is reasonably thought to be nearby and the search is safe, it is obligatory to search up to 400 paces. The text does not describe this simply as a modern circular 'radius'; the practical rule is the stated search distance under safety and likelihood.