Al-Kāfi - The Book of Belief and Disbelief

Al-Kāfi - The Book of Belief and Disbelief َّدُ بْنُ يَحْيَى عَنْ أَحْ٠َّدٍ عَنْ عَلِيِّ بْنِ الْحَكَ٠ِ عَنْ سَيْفِ بْنِ عَ٠َنْصُورِ بْنِ حَازِ٠ٍ عَنْ أَبِي جَعْفَرٍ (عَلَيهِ السَّلا٠ِنْ عِبَادَةٍ أَفْضَلَ عِنْدَ الله ٠ِنْ عِفَّةِ بَطْنٍ وَفَرْجٍ. 8.

Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from Ali ibn al-Hakam from Sayf ibn ‘Amirah from Mansur ibn Hazim from abu Ja’far (a.s.) who has said the following: “Abu Ja’far (a.s.) has said, ‘In the sight of Allah there is no worship more virtuous than chastity in matters of stomach and genital organs.’” صحيح - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (8/68))