وَوَضْعُ الْيَدَيْنِ وَالرُّكْبَتَيْنِ فِي الصَّحِيحِ، وَشَيْءٍ مِنْ أَصَابِعِ الرِّجْلَيْنِ حَالَ السُّجُودِ عَلَى الْأَرْضِ، وَلَا يَكْفِي وَضْعُ ظَاهِرِ الْقَدَمِ
The hands and knees are placed, and some part of the toes must touch the ground during Sujud. Merely resting the top surface of the foot is not enough. The complete Sunnah uses all the relevant limbs even where the commentary discusses a smaller minimum for validity.
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Prayer Pillars: Ruku and Sujud
وَوَضْعُ الْيَدَيْنِ وَالرُّكْبَتَيْنِ فِي الصَّحِيحِ، وَشَيْءٍ مِنْ أَصَابِعِ الرِّجْلَيْنِ حَالَ السُّجُودِ عَلَى الْأَرْضِ، وَلَا يَكْفِي وَضْعُ ظَاهِرِ الْقَدَمِ
The hands and knees are placed, and some part of the toes must touch the ground during Sujud. Merely resting the top surface of the foot is not enough. The complete Sunnah uses all the relevant limbs even where the commentary discusses a smaller minimum for validity.