[Machine] About linking fingers after performing Wudu or after entering the prayer position, it is mentioned in the book Al-Jumua that it is a confirmed practice in all prayers.  

عَنِ التَّشْبِيكِ بَيْنَ الْأَصَابِعِ بَعْدَمَا يَتَوَضَّأُ أَوْ بَعْدَمَا يَدْخُلُ الصَّلَاةَ مَوْضِعُهُ كِتَابُ الْجُمُعَةِ وَهُوَ إِنْ ثَبَتَ عَامٌّ فِي جَمِيعِ الصَّلَوَاتِ