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.
bayhaqi:2735Abū al-Ḥusayn b. Bishrān al-ʿAdl> Abū Jaʿfar al-Razzāz > Muḥammad b. al-Haytham > Yaḥyá b. Bukayr > al-Layth > Khālid b. Yazīd > Saʿīd b. Abū Hilāl > Muḥammad b. ʿAjlān > Abū al-Zubayr > Raʾá ʿAbdullāh b. ʿUmar Idhā Sajad Ḥīn Yarfaʿ Raʾsah from al-Sajdah al-Ūlá Yaqʿud > Aṭrāf Aṣābiʿih

[Machine] He informed him that he saw Abdullah bin Umar, when he prostrates and raises his head from the first prostration, he sits on the tips of his fingers and says that it is from the Sunnah.  

البيهقي:٢٧٣٥أَخْبَرَنَا أَبُو الْحُسَيْنِ بْنُ بِشْرَانَ الْعَدْلُ بِبَغْدَادَ أنبأ أَبُو جَعْفَرٍ الرَّزَّازُ ثنا مُحَمَّدُ بْنُ الْهَيْثَمِ ثنا يَحْيَى بْنُ بُكَيْرٍ ثنا اللَّيْثُ عَنْ خَالِدِ بْنِ يَزِيدَ عَنْ سَعِيدِ بْنِ أَبِي هِلَالٍ عَنْ مُحَمَّدِ بْنِ عَجْلَانَ أَنَّ أَبَا الزُّبَيْرِ

أَخْبَرَهُ أَنَّهُ رَأَى عَبْدَ اللهِ بْنَ عُمَرَ إِذَا سَجَدَ حِينَ يَرْفَعُ رَأْسَهُ مِنَ السَّجْدَةِ الْأُولَى يَقْعُدُ عَلَى أَطْرَافِ أَصَابِعِهِ وَيَقُولُ إِنَّهُ مِنَ السُّنَّةِ