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:15740ʿUbayd b. Ghannām > Abū Bakr b. Abū Shaybah > Muḥammad b. Bishr > Saʿīd b. Abū ʿArūbah > Qatādah > ʿAbdullāh b. Buraydah > ʿImrān b. Ḥuṣayn

[Machine] He asked the Messenger of Allah ﷺ about the prayer of a man while he is standing and sitting, so he said: "His prayer while sitting is equivalent to half of his prayer while standing."  

الطبراني:١٥٧٤٠حَدَّثَنَا عُبَيْدُ بْنُ غَنَّامٍ ثنا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ ثنا مُحَمَّدُ بْنُ بِشْرٍ عَنْ سَعِيدِ بْنِ أَبِي عَرُوبَةَ عَنْ قَتَادَةَ عَنْ عَبْدِ اللهِ بْنِ بُرَيْدَةَ عَنْ عِمْرَانَ بْنِ حُصَيْنٍ

أَنَّهُ سَأَلَ رَسُولَ اللهِ ﷺ وَكَانَ رَجُلًا مَيْسُورًا عَنْ صَلَاةِ الرَّجُلِ قَائِمًا وَقَاعِدًا فَقَالَ «صَلَاتُهُ قَاعِدًا عَلَى نِصْفِ صَلَاتِهِ قَائِمًا»  


See similar narrations below:

Collected by Abū Dāwūd, Aḥmad
abudawud:951Musaddad > Yaḥyá > Ḥusayn al-Muʿallim > ʿAbdullāh b. Buraydah > ʿImrān b. Ḥuṣayn

‘Imran b. Hussain asked the prophet ﷺ about the prayer a man offers in sitting condition. He replied: his prayer in standing condition is better than his prayer in sitting condition, and his prayer in sitting condition is half the prayer he offers in standing condition, and his prayer in lying condition is half the prayer he offers in sitting condition.  

أبو داود:٩٥١حَدَّثَنَا مُسَدَّدٌ حَدَّثَنَا يَحْيَى عَنْ حُسَيْنٍ الْمُعَلِّمِ عَنْ عَبْدِ اللَّهِ بْنِ بُرَيْدَةَ عَنْ عِمْرَانَ بْنِ حُصَيْنٍ

أَنَّهُ سَأَلَ النَّبِيَّ ﷺ عَنْ صَلاَةِ الرَّجُلِ قَاعِدًا فَقَالَ صَلاَتُهُ قَائِمًا أَفْضَلُ مِنْ صَلاَتِهِ قَاعِدًا وَصَلاَتُهُ قَاعِدًا عَلَى النِّصْفِ مِنْ صَلاَتِهِ قَائِمًا وَصَلاَتُهُ نَائِمًا عَلَى النِّصْفِ مِنْ صَلاَتِهِ قَاعِدًا  

ahmad:19899Yaḥyá b. Saʿīd > Ḥusayn al-Muʿallim > ʿAbdullāh b. Buraydah > ʿImrān b. Ḥuṣayn

‘Imran b. Hussain asked the prophet ﷺ about the prayer a man offers in sitting condition. He replied: his prayer in standing condition is better than his prayer in sitting condition, and his prayer in sitting condition is half the prayer he offers in standing condition, and his prayer in lying condition is half the prayer he offers in sitting condition. (Using translation from Abū Dāʾūd 951)   

أحمد:١٩٨٩٩حَدَّثَنَا يَحْيَى بْنُ سَعِيدٍ عَنْ حُسَيْنٍ الْمُعَلِّمِ حَدَّثَنَا عَبْدُ اللهِ بْنُ بُرَيْدَةَ عَنْ عِمْرَانَ بْنِ حُصَيْنٍ

أَنَّهُ سَأَلَ رَسُولَ اللهِ ﷺ عَنْ صَلَاةِ الرَّجُلِ قَاعِدًا فَقَالَ مَنْ صَلَّى قَائِمًا فَهُوَ أَفْضَلُ وَصَلَاةُ الرَّجُلِ قَاعِدًا عَلَى النِّصْفِ مِنْ صَلَاتِهِ قَائِمًا وَصَلَاتُهُ نَائِمًا عَلَى النِّصْفِ مِنْ صَلَاتِهِ قَاعِدًا