Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
bayhaqi:3573 – Abū ʿAlī al-Rūdhbārī > Abū Bakr b. Dāsah > Abū Dāwud > Bishr b. Hilāl > ʿAbd al-Wārith > Ismāʿīl b. Umayyah > Saʾalt Nāfiʿ > al-a man Yuṣallī / Mushabbik Yadah

[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.  

البيهقي:٣٥٧٣ – أَخْبَرَنَا أَبُو عَلِيٍّ الرُّوذْبَارِيُّ أنبأ أَبُو بَكْرِ بْنُ دَاسَةَ ثنا أَبُو دَاوُدَ ثنا بِشْرُ بْنُ هِلَالٍ ثنا عَبْدُ الْوَارِثِ عَنْ إِسْمَاعِيلَ بْنِ أُمَيَّةَ قَالَ سَأَلْتُ نَافِعًا عَنِ الرَّجُلِ يُصَلِّي وَهُوَ مُشَبِّكٌ يَدَهُ قَالَ قَالَ ابْنُ عُمَرَ تِلْكَ صَلَاةُ الْمَغْضُوبِ عَلَيْهِمْ وَحَدِيثُ كَعْبِ بْنِ عُجْرَةَ فِي النَّهْيِ

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