6. Dearest brother, what Allah has made Haram (unlawful) for us, those people consider it as Halal (lawful) for them. Hence, when they commit a Haram (unlawful) act, they will neither feel ashamed nor will they refrain from perpetrating it. You should neither agree with their whims nor mix with them in their sins. Otherwise, you will not be relieved from having to answer before Allah (swt) and it will not hold as an excuse on the Day of Judgment.
7. Do not take their girls for company, and do not let there develop between you and them, any special friendship or any emotional relationship. If this kind of socializing is a sin for those other than you, then it is a sin twice as great for you and you know well the meaning of this. Although you are known to us to be one that is trustworthy and decent, I have mentioned this to you, to caution you against the downfalls of sins so that your feet may never slip. And in your chastity let there be content and in your dignity let there be adequacy.
8. As for alcohol, do not approach it and do not use the climate as an excuse, because when Allah made it Haram (unlawful), He had full knowledge about all types of climate but did not exclude one country from another or one nation from another from this prohibition. Allah (swt) made it forbidden with neither doubt nor exception. So be aware not to let it occupy a part of your abdomen, otherwise it will remain as a black spot on its pure skin. Be determined as much as possible before the first drink. Because once your mind is concealed by it, you will follow it by the second and third drink, whereby you will have fallen into a pit, difficult to escape from and will have incriminated yourself and others. then, even if you expiated this sin with repentance, you would still not match your original purity and superb credibility.
9. Do not taste anything in those restaurants which serve Haram (unlawful) food, like pork and dead meat. In that which is Halal (lawful) you have a substitute and enough for contentment. So do not taste the Haram (unlawful) and do not let your flesh grow on it, otherwise fire is what it deserves. Allah (swt) has prohibited that which is impure: . . . He enjoins upon them what is good and forbids them what is evil... (al-Araf 7: 157). So leave that which is bad for that which is good.
10. As for casinos, night-clubs, and other such places of vanity, your time is far too precious to be wasted in them. I have looked into the saying, time is made of gold, and I do not approve of it. Time is far more precious than gold, for time is life. Is it not true that your life is nothing but a few hours and you never know when they will end? Dearest brother, be stringent with your time and do not spend it except in that which is significant, and acquire pleasure in that which is lawful. In the heavens there is calmness and on the earth there is beauty. In the gardens there is freshness and in you there is a sign. In the sea there is might and in the air there is nourishment. Take from all this comfort for your soul and recovery for your mind. And do not waste your time by being unmindful, this will shield you from good and lead you to evil.
11. Be critical, with insight, and be just and well acquainted with people. Do not let your goodness draw you to forget their bad, and their bad hurt you to forget their goodness. Rather study them as would a researcher and an examiner. Encompass with knowledge all of their affairs, and then with an eye of insight, scrutinize it all. Present back the good that you find to your people and nation, and return with it victorious and supported. Other than that, throw it back on them and do not come back until you have dusted off your hands and emptied your mind of it all.