Sahl bin Sa'd (May Allah be pleased with him) reported : The Messenger of Allah (ﷺ) said, "Whosoever gives me a guarantee to safeguard what is between his jaws and what is between his legs, I shall guarantee him Jannah."
وعن سهل بن سعد قال: قال رسول الله صلى الله عليه وسلم: "من يضمن لي ما بين لحييه، وما بين رجليه أضمن له الجنة" ((متفق عليه))
(Al-Bukhari, Sunnah.com reference Book 18 Hadith 3, Arabic/English book reference Book 18 Hadith 1513, http://sunnah.com/riyadussaliheen/18/3)
وعن سهل بن سعد قال: قال رسول الله صلى الله عليه وسلم: "من يضمن لي ما بين لحييه، وما بين رجليه أضمن له الجنة" ((متفق عليه))
(Al-Bukhari, Sunnah.com reference Book 18 Hadith 3, Arabic/English book reference Book 18 Hadith 1513, http://sunnah.com/riyadussaliheen/18/3)