The Book of Asceticism · Hadith 17 (#Ḥadīth #14)
Chapter 1 | On silence Except when Speaking what is Good, Abandonment of what does not concern one, and Slander
صفوان بن يحيى عن أبي خالد عن حمزة بن حمران عن أبي عبد الله عليه السلام قال: أتى النبي صلى الله عليه وآله اعرابي فقال له: أوصني يا رسول الله فقال: نعم أوصيك بحفظ ما بين رجليك
14.Ṣafwān ibn Yaḥyā narrated from Abū Khālid, from Ḥamzah ibn Ḥumrān, from Abū ʿAbdillāh who said, “A bedouin came to the Prophet (ṣ) and said, ‘Advise me, O Messenger of Allah!’ He (ṣ) replied, ‘Yes. I advise you to guard that which is between your legs.’” [1]
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).