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:2730Ibrāhīm b. Hāshim al-Baghawī > Kathīr b. Yaḥyá > Ḥafṣ b. ʿUmar al-Raqāshī > ʿAbdullāh b. Ḥasan b. Ḥasan b. ʿAlī from his father from his grandfather

[Machine] It was asked, "O Messenger of Allah, if people come to a house and one of them seeks permission, does it count as permission for all of them?" He said, "Yes." It was then asked, "What if a person from the group seeks permission, does it count as permission for everyone?" He said, "Yes." It was asked, "If people pass by and one of them greets, does it count as a greeting for everyone?" He said, "Yes." It was then asked, "What if a person from the group greets, does it count as a greeting for everyone?" He said, "Yes."  

الطبراني:٢٧٣٠حَدَّثَنَا إِبْرَاهِيمُ بْنُ هَاشِمٍ الْبَغَوِيُّ ثنا كَثِيرُ بْنُ يَحْيَى ثنا حَفْصُ بْنُ عُمَرَ الرَّقَاشِيُّ ثنا عَبْدُ اللهِ بْنُ حَسَنِ بْنِ حَسَنِ بْنِ عَلِيٍّ عَنْ أَبِيهِ عَنْ جَدِّهِ قَالَ

قِيلَ يَا رَسُولَ اللهِ الْقَوْمُ يَأْتُونَ الدَّارَ فَيَسْتَأْذِنُ وَاحِدٌ مِنْهُمْ أَيُجْزِئُ عَنْهُمْ جَمِيعًا؟ قَالَ «نَعَمْ» قِيلَ فَيَرُدُّ رَجُلٌ مِنَ الْقَوْمِ أَيُجْزِئُ عَنِ الْجَمِيعِ؟ قَالَ «نَعَمْ» قِيلَ الْقَوْمُ يَمُرُّونَ فَيُسَلِّمُ وَاحِدٌ مِنْهُمْ أَيُجْزِئُ عَنِ الْجَمِيعِ؟ قَالَ «نَعَمْ» قِيلَ فَيَرُدُّ رَجُلٌ مِنَ الْقَوْمِ أَيُجْزِئُ عَنِ الْجَمِيعِ؟ قَالَ «نَعَمْ»