The Sufficient (Vol 6) · Hadith 2379 (#Ḥadīth #6)

عَنْهُ عَنْ أَبِيهِ عَنْ صَفْوَانَ بْنِ يَحْيَى عَنْ عِيصِ بْنِ الْقَاسِمِ قَالَ سَأَلْتُ أَبَا عَبْدِ اللَّهِ ( عليه السلام ) عَنِ السَّطْحِ يُنَامُ عَلَيْهِ بِغَيْرِ حُجْرَةٍ قَالَ نَهَى رَسُولُ اللَّهِ ( صلى الله عليه وآله ) عَنْ ذَلِكَ فَسَأَلْتُهُ عَنْ ثَلَاثَةِ حِيطَانٍ فَقَالَ لَا إِلَّا أَرْبَعَةً قُلْتُ كَمْ طُولُ الْحَائِطِ قَالَ أَقْصَرُهُ ذِرَاعٌ وَ شِبْرٌ .

6. It is narrated from the narrator of the previous Hadith from his father from Safwan ibn Yahya from ‘Is ibn al-Qasim who has said the following: “I once asked abu ‘Abd Allah , about sleeping overnight on a flat roof without fencing wall around it. He (the Imam) said, ‘The Messenger of Allah, O Allah, grant compensation to Muhammad and his family worthy of their services to Your cause, prohibited it.’ I then asked if three yards (Zira’ arm-length) is sufficient for the height of such fencing wall. He (the Imam) said, ‘No, it is four.’ I then asked, ‘How much is the length of the wall?’ He (the Imam) said, ‘The shortest is one yard (Zira’ arm-length) and one Shibr. (the distance from the tip of the thump to the tip of the little finger with the thump and little finger open and stretched out).”’

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).