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.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
abudawud:5174 – [Chain 1] ʿUthmān b. Abū Shaybah > Jarīr [Chain 2] Abū Bakr b. Abū Shaybah > Ḥafṣ > al-Aʿmash > Ṭalḥah > Huzayl > Jāʾ a man

A man came. Uthman's version has: Sa'd ibn AbuWaqqas came. He stood at the door. Uthman's version has: (He stood) facing the door. The Prophet ﷺ said to him: Away from it, (stand) this side or that side. Asking permission is meant to escape from the look of an eye.  

أبو داود:٥١٧٤ – حَدَّثَنَا عُثْمَانُ بْنُ أَبِي شَيْبَةَ حَدَّثَنَا جَرِيرٌ ح وَحَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ حَدَّثَنَا حَفْصٌ عَنِ الأَعْمَشِ عَنْ طَلْحَةَ عَنْ هُزَيْلٍ قَالَ جَاءَ رَجُلٌ قَالَ

عُثْمَانُ سَعْدُ بْنُ أَبِي وَقَّاصٍ فَوَقَفَ عَلَى بَابِ النَّبِيِّ ﷺ يَسْتَأْذِنُ فَقَامَ عَلَى الْبَابِ قَالَ عُثْمَانُ مُسْتَقْبِلَ الْبَابِ فَقَالَ لَهُ النَّبِيُّ ﷺ هَكَذَا عَنْكَ أَوْ هَكَذَا فَإِنَّمَا الاِسْتِئْذَانُ مِنَ النَّظَرِ  

See similar narrations below:

Collected by Bayhaqī
bayhaqi:17661 – Abū al-Ḥasan ʿAlī b. Muḥammad al-Muqriʾ > al-Ḥasan b. Muḥammad b. Isḥāq > Yūsuf b. Yaʿqūb > Abū al-Rabīʿ > Jarīr > al-Aʿmash > Ṭalḥah b. Muṣarrif > Huzayl b. Shuraḥbīl

[Machine] Sa'd ibn Mu'adh came to the Prophet ﷺ and sought permission to enter while he was facing the door. The Prophet ﷺ said with his hand like this, "O Sa'd, seeking permission is by just looking."  

البيهقي:١٧٦٦١ – أَخْبَرَنَا أَبُو الْحَسَنِ عَلِيُّ بْنُ مُحَمَّدٍ الْمُقْرِئُ أنبأ الْحَسَنُ بْنُ مُحَمَّدِ بْنِ إِسْحَاقَ ثنا يُوسُفُ بْنُ يَعْقُوبَ ثنا أَبُو الرَّبِيعِ ثنا جَرِيرٌ عَنِ الْأَعْمَشِ عَنْ طَلْحَةَ بْنِ مُصَرِّفٍ عَنْ هُزَيْلِ بْنِ شُرَحْبِيلَ قَالَ

أَتَى سَعْدُ بْنُ مُعَاذٍ النَّبِيَّ ﷺ فَاسْتَأْذَنَ عَلَيْهِ وَهُوَ مُسْتَقْبِلٌ الْبَابَ فَقَالَ النَّبِيُّ ﷺ بِيَدِهِ هَكَذَا يَا سَعْدُ فَإِنَّمَا الِاسْتِئْذَانُ مِنَ النَّظَرِ