797. hadíth
وَ رُوِيَ: «فِي اَلرَّجُلِ يَخْرُجُ عُرْيَاناً فَتُدْرِكُهُ اَلصَّلاَةُ أَنَّهُ يُصَلِّي عُرْيَاناً قَائِماً إِنْ لَمْ يَرَهُ أَحَدٌ وَ إِنْ رَآهُ أَحَدٌ صَلَّى جَالِساً.
Imam Jafar ibn Muhammad Al-Sadiq (a.s) stated regarding a man who finds himself outside without clothing and the time for prayer arrives, that he should pray standing while uncovered if no one can see him. However, if he is in view of others, he should pray sitting.