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:14177ʿUbayd b. Ghannām > Abū Bakr b. Abū Shaybah > Zayd b. al-Ḥubāb > al-Ḥusayn b. Wāqid > Abū Nahīk > ʿAmr b. Akhṭab Abū Zayd al-Anṣārī

[Machine] I heard 'Amr bin Akhatab Abu Zaid al-Ansari saying, "I saw the seal on the back of the Messenger of Allah ﷺ like this, appearing as if it were being embossed."  

الطبراني:١٤١٧٧حَدَّثَنَا عُبَيْدُ بْنُ غَنَّامٍ ثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ ثَنَا زَيْدُ بْنُ الْحُبَابِ ثَنَا الْحُسَيْنُ بْنُ وَاقِدٍ حَدَّثَنِي أَبُو نَهِيكٍ قَالَ

سَمِعْتُ عَمْرَو بْنَ أَخْطَبَ أَبَا زَيْدٍ الْأَنْصَارِيَّ يَقُولُ «رَأَيْتُ الْخَاتَمَ عَلَى ظَهْرِ رَسُولِ اللهِ ﷺ هَكَذَا يُظْهِرُهُ كَأَنَّهُ يَخْتِمُ»