وَمَنْ فَاتَتْهُ صَلَاةٌ فِي الْحَضَرِ: قَضَاهَا فِي السَّفَرِ أَرْبَعًا.
Translation: One who missed a prayer while resident makes it up as four rak‘ahs even when now travelling.
The full obligation was established when the prayer was missed; beginning a journey later does not reduce that outstanding debt.
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The Traveller’s Prayer: Journey Distance, Qasr, Residence and Make-up
وَمَنْ فَاتَتْهُ صَلَاةٌ فِي الْحَضَرِ: قَضَاهَا فِي السَّفَرِ أَرْبَعًا.
Translation: One who missed a prayer while resident makes it up as four rak‘ahs even when now travelling.
The full obligation was established when the prayer was missed; beginning a journey later does not reduce that outstanding debt.