The Prophet ﷺ said, "Whoever guarantees me (the chastity of) what is between his legs (i.e. his private parts), and what is between his jaws (i.e., his tongue), I guarantee him Paradise."
قَالَ النَّبِيُّ ﷺ مَنْ تَوَكَّلَ لِي مَا بَيْنَ رِجْلَيْهِ وَمَا بَيْنَ لَحْيَيْهِ تَوَكَّلْتُ لَهُ بِالْجَنَّةِ