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
ahmad:27552 – Sufyān b. ʿUyaynah > ʿAṭāʾ / Ibn al-Sāʾib > Abū ʿAbd al-Raḥman al-Muqriʾ > Abū al-Dardāʾ

[Machine] I heard the Messenger of Allah ﷺ saying, "The parent is the middle door of Paradise, so protect that door or leave it."  

أحمد:٢٧٥٥٢ – حَدَّثَنَا سُفْيَانُ بْنُ عُيَيْنَةَ عَنْ عَطَاءٍ يَعْنِي ابْنَ السَّائِبِ عَنْ أَبِي عَبْدِ الرَّحْمَنِ الْمُقْرِئِ قَالَ قَالَ أَبُو الدَّرْدَاءِ

سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ الْوَالِدُ أَوْسَطُ أَبْوَابِ الْجَنَّةِ فَاحْفَظْ ذَلِكَ الْبَابَ أَوْ دَعْهُ  

See similar narrations below:

Collected by Ibn Mājah, Suyūṭī
ibnmajah:3663 – Muḥammad b. al-Ṣabbāḥ > Sufyān b. ʿUyaynah > ʿAṭāʾ > Abū ʿAbd al-Raḥman > Abū al-Dardāʾ

"The father is the middle door of Paradise (i.e. the best way to Paradise), so it is up to you whether you take advantage of it or not."  

ابن ماجة:٣٦٦٣ – حَدَّثَنَا مُحَمَّدُ بْنُ الصَّبَّاحِ حَدَّثَنَا سُفْيَانُ بْنُ عُيَيْنَةَ عَنْ عَطَاءٍ عَنْ أَبِي عَبْدِ الرَّحْمَنِ عَنْ أَبِي الدَّرْدَاءِ

سَمِعَ النَّبِيَّ ﷺ يَقُولُ الْوَالِدُ أَوْسَطُ أَبْوَابِ الْجَنَّةِ فَأَضِعْ ذَلِكَ الْبَابَ أَوِ احْفَظْهُ  

suyuti:12102a –
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السيوطي:١٢١٠٢a –

"الْوَالدُ أوْسَطُ أبْوَاب الجَنَّةِ فَأَضِعْ ذَلكَ الْبَابَ أَو احْفَظْهُ".  

[حم] أحمد [ت] الترمذي صحيح، [هب] البيهقى في شعب الإيمان [ك] الحاكم في المستدرك عن أَبي الدرداء