Guard two and Paradise is guaranteed
مَنْ يَضْمَنْ لِي مَا بَيْنَ لَحْيَيْهِ وَمَا بَيْنَ رِجْلَيْهِ، أَضْمَنْ لَهُ الْجَنَّةَ
Man yadman li ma bayna lahyayhi wa ma bayna rijlayh, adman lahu-l-jannah.
"Whoever guarantees for me what is between his jaws and what is between his legs, I will guarantee for him Paradise."
Narrated by Sahl ibn Sa'd. Sahih al-Bukhari 6474
A short reflection
Two regions of the body, two thresholds. Most of the damage in a life leaves through one of them. Keep both closed for things that are not yours to give.