Have Haya` (modesty) as due for Allah
'Abdullah bin Mas'ud, may Allah be pleased with him, narrated that the Messenger of Allah (may the peace and blessings of Allah be upon him) said:
"Have Haya' (modesty) for Allah as is due to him." [He said:] We said: "O Prophet of Allah! We have Haya', and all praise is due to Allah." He said: "Not that, but having the Haya' (modesty) for Allah which is due to him is to protect the head and what it contains and to protect the abdomen and what it includes, and to remember death and the worn body, and whoever seeks the Hereafter, shall leave the adornments of the world. So whoever does that, then he has indeed fulfilled Haya', which is due to Allah." Narrated by Ahmad and Tirmidhi, and classed as Saheeh by Al-Albani.
This Hadeeth is one of the commandments that is sufficient to reform this life and the Hereafter if the Muslim adhered to it. Every commandment entails unlimited good qualities, each of which is an evidence for the soundness of faith and certainty.
What is the meaning of having Haya` for Allah? Seek it by yourselves, and burden yourself to obtain it, whenever you find yourselves inclined to what brings bad consequences stick to be modest of Allah. whenever you underestimate one of the virtues, or commit a vice, or fail short to fulfill a duty, or belittle doing one of the recommended acts, or indulge in what does not matter you then remind yourself of Allah.
Modesty takes a leading position among the good manners, it is like that of a head to the body; this is why the Prophet (peace and blessings of Allah be upon him) singled out mentioning modesty from among the branches of faith. He said: (Faith consists of sixty-six branches, modesty is a branch of faith)
I know that the branches of faith do not respond to anyone who is not modest, because modesty is a living heart, an attentive conscience, and a noble sense that helps the one who sticks to it to go to the path of goodness, no matter what obstacles he experiences. Moreover, it causes him to hate the way the Allah disliked even if it is a bed of roses.