And the most beloved to me -asws is that you enable your palms upon your knees...

فَإِذَا أَرَدْتَ أَنْ تَسْجُدَ فَارْفَعْ يَدَيْكَ بِالتَّكْبِيرِ وَ خِرَّ سَاجِداً وَ ابْدَأْ بِيَدَيْكَ فَضَعْهُمَا عَلَى الْأَرْضِ قَبْلَ رُكْبَتَيْكَ تَضَعُهُمَا مَعاً وَ لَا تَفْتَرِشْ ذِرَاعَيْكَ افْتِرَاشَ السَّبُعِ ذِرَاعَيْهِ وَ لَا تَضَعَنَّ ذِرَاعَيْكَ عَلَى رُكْبَتَيْكَ وَ فَخِذَيْكَ وَ لَكِنْ تَجَنَّحْ بِمِرْفَقَيْكَ وَ لَا تُلْصِقْ كَفَّيْكَ بِرُكْبَتَيْكَ وَ لَا تُدْنِهِمَا مِنْ وَجْهِكَ بَيْنَ ذَلِكَ حِيَالَ مَنْكِبَيْكَ وَ لَا تَجْعَلْهُمَا بَيْنَ يَدَيْ رُكْبَتَيْكَ وَ لَكِنْ تُحَرِّفُهُمَا عَنْ ذَلِكَ شَيْئاً وَ ابْسُطْهُمَا عَلَى الْأَرْضِ بَسْطاً وَ اقْبِضْهُمَا إِلَيْكَ قَبْضاً So when you intend to perform Sajdah , raise your hand in the exclamation of Takbīr and fall down perform Sajdah , and begin with your hands and place these upon the ground before your knees, placing them both together and not squatting your forearms like the wild animals, nor placing your forearms upon your knees and your thighs, but forming wings with your elbows, not pasting your palm with your knees, nor them being too close to your face, displaying them parallel to your shoulders and not making them to be in front of your knees, but diverging them a little bit from that, and extend them upon the ground with an extensions, and pulling them a little towards you with a pulling.

وَ إِنْ كَانَ تَحْتَهُمَا ثَوْبٌ فَلَا يَضُرُّكَ وَ إِنْ أَفْضَيْتَ بِهِمَا إِلَى الْأَرْضِ فَهُوَ أَفْضَلُ وَ لَا تُفَرِّجَنَّ بَيْنَ أَصَابِعِكَ فِي سُجُودِكَ وَ لَكِنْ ضُمَّهُنَّ جَمِيعاً And if there was a cloth beneath them, it would not harm you, and if you were to lead with these two to the ground, so it would be superior. And do not separate between your fingers during your Sajdah , but keep them close together’.