The wording itself includes سَفَرًا أَوْ حَضَرًا and وَلَوْ مُنْفَرِدًا. Therefore a lone male traveler performing a Fard prayer remains within the Sunnah Mu'akkadah rule; the course should not downgrade it to a merely optional category contrary to the source.
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Travel Does Not Remove the Sunnah
Adhan and Iqamah: Legal Status and Where They Are Prescribed
The wording itself includes سَفَرًا أَوْ حَضَرًا and وَلَوْ مُنْفَرِدًا. Therefore a lone male traveler performing a Fard prayer remains within the Sunnah Mu'akkadah rule; the course should not downgrade it to a merely optional category contrary to the source.