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:2734Abū Ṭāhir al-Faqīh > Abū Ḥāmid b. Bilāl > Abū al-Azhar > Yaʿqūb b. Ibrāhīm from my father > Ibn Isḥāq

[Machine] He narrated to me about the erection of the Messenger of Allah ﷺ on his heels and the fronts of his feet between the prostrations when Abdullah ibn Abi Najeeh Al-Makki narrated from Mujahid ibn Jabr Abu Al-Hajjaj who said, "I heard Abdullah ibn Abbas mentioning it." He said, "So I said to him, 'O Abu Al-Abbas, by Allah, we used to consider this as a fault from the one who does it.' He said, 'He said, 'Indeed, it is the Sunnah.'"  

البيهقي:٢٧٣٤أَخْبَرَنَا أَبُو طَاهِرٍ الْفَقِيهُ أنبأ أَبُو حَامِدِ بْنُ بِلَالٍ ثنا أَبُو الْأَزْهَرِ ثنا يَعْقُوبُ بْنُ إِبْرَاهِيمَ ثنا أَبِي عَنِ ابْنِ إِسْحَاقَ قَالَ

حَدَّثَنِي عَنِ انْتِصَابِ رَسُولِ اللهِ ﷺ عَلَى عَقِبَيْهِ وَصُدُورِ قَدَمَيْهِ بَيْنَ السَّجْدَتَيْنِ إِذَا صَلَّى عَبْدُ اللهِ بْنُ أَبِي نَجِيحٍ الْمَكِّيُّ عَنْ مُجَاهِدِ بْنِ جَبْرٍ أَبِي الْحَجَّاجِ قَالَ سَمِعْتُ عَبْدَ اللهِ بْنَ عَبَّاسٍ يَذْكُرُهُ قَالَ فَقُلْتُ لَهُ يَا أَبَا الْعَبَّاسِ وَاللهِ إِنْ كُنَّا لَنَعُدُّ هَذَا جَفَاءً مِمَّنْ صَنَعَهُ قَالَ فَقَالَ إِنَّهَا لَسُنَّةٌ