What is the text of the noble Hadith in which the Messenger of Allah, peace and blessings be upon him, guarantees Paradise for whoever guarantees him six things, and what are these commandments, and how can they be preserved?

Perhaps the six matters mentioned in the noble Hadith are: truthfulness in speech, fulfilling promises, rendering trusts, guarding one's chastity, lowering one's gaze, and restraining one's hands. To preserve these morals, one must strengthen faith, ask Allah for steadfastness, frequently read books that encourage obedience and deter from disobedience, adhere to righteous environments and gatherings of knowledge, accompany good people, and stay away from bad gatherings and companions.

Among the helpful means for steadfastness are: recognizing the fruits of steadfastness, such as the expansion of sustenance and entry into Paradise, and applying four principles: Musharata (stipulating abandonment of evil), Muraqaba (monitoring oneself to see if one has fulfilled what was stipulated), Muhasaba (holding oneself accountable for actions and words), and Mujahada (obliging oneself to obey Allah and oppose whims).

To aid in truthfulness: do not speak of everything heard unless its authenticity is confirmed and there is a benefit in doing so, and contemplate the consequences of lying. For truthfulness leads to righteousness and enters Paradise, while lying leads to wickedness and enters Hellfire, and what most throws people into Hellfire is the harvest of their tongues.

For rendering trusts and restraining from injustice: be aware of Allah's watchful eye and the seriousness of the rights of creatures, and that these are not forgiven except by repentance and seeking release from their owners. For betrayal of trust is a sign of hypocrisy, and the bankrupt one is he who comes on the Day of Judgment with great good deeds, but he insulted, struck, consumed people's wealth, and shed their blood, so his good deeds are taken and given from the sins of those whose rights he violated, then he is cast into the Fire.

To guard one's chastity and lower one's gaze, you can refer to fatwas with the following numbers: 49467, 54337, 58378, 46301.