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:7054Abū ʿAbdullāh al-Ḥāfiẓ > Abū al-ʿAbbās > al-Rabīʿ > al-Shāfiʿī > al-Thiqah > ʿUmar b. ʿAṭāʾ > ʿIkrimah > Ibn ʿAbbās

[Machine] "And Abu Abdullah Al-Hafiz told us that Abu Al-Abbas narrated to us that Al-Rabi' narrated to us that Al-Shafi'i narrated to us that Al-Thiqat narrated from Umar ibn Ata' from Ikrimah from Ibn Abbas, who said: 'Ask the Messenger of Allah ﷺ about placing the hand on the head.'"  

البيهقي:٧٠٥٤

وَأَخْبَرَنَا أَبُو عَبْدِ اللهِ الْحَافِظُ أنبأ أَبُو الْعَبَّاسِ أنبأ الرَّبِيعُ أنبأ الشَّافِعِيُّ أنبأ الثِّقَةُ عَنْ عُمَرَ بْنِ عَطَاءٍ عَنْ عِكْرِمَةَ عَنِ ابْنِ عَبَّاسٍ قَالَ سُلَّ رَسُولُ اللهِ ﷺ مِنْ قِبَلِ رَأْسِهِ