Sahl ibn Sa’d reported: The Messenger of Allah, peace and blessings be upon him, said, “Whoever guarantees for me what is between his jaws and his legs, I can guarantee for him Paradise.”
Source: Ṣaḥīḥ al-Bukhārī 6109
Grade: Sahih (authentic) according to Al-Bukhari
عَنْ سَهْلِ بْنِ سَعْدٍ عَنْ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ مَنْ يَضْمَنْ لِي مَا بَيْنَ لَحْيَيْهِ وَمَا بَيْنَ رِجْلَيْهِ أَضْمَنْ لَهُ الْجَنَّةَ
6109 صحيح البخاري كتاب الرقاق باب حفظ اللسان