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.
tabarani:10950Isḥāq al-Dabarī > ʿAbd al-Razzāq > al-Thawrī > Layth > Ṭāwus > Ibn ʿAbbās > from al-Sunnah

[Machine] "To touch your heels with your buttocks in prayer."  

الطبراني:١٠٩٥٠حَدَّثَنَا إِسْحَاقُ الدَّبَرِيُّ عَنْ عَبْدِ الرَّزَّاقِ عَنِ الثَّوْرِيِّ عَنْ لَيْثٍ عَنْ طَاوُسٍ عَنِ ابْنِ عَبَّاسٍ قَالَ «§مِنَ السُّنَّةِ

أَنْ تُمِسَّ أَلْيَتَيْكَ عَقِبَيْكَ فِي الصَّلَاةِ»