Based on obligatory precaution...
Based on obligatory precaution, one must refrain from using, it even if he does not intend to reach the stage of ejaculation. This law applies without any difference between a married and an the unmarried man. (See the question-answer section below.) It is permissible for a man to use the condom to prevent pregnancy; however, it is precautionarily obligatory that he should seek the consent of his wife to using it.
It is not permissible for a Muslim man to go to unisex swimming pools and other places where people go about half-naked. That is if it entails a haram act. Based on obligatory precaution, one must refrain from going to such places, even if it does not entail a haram act. A Muslim man is not allowed to shake hands with a woman without a barrier, such as gloves, unless refraining from shaking hands will put him in a considerable harm or unbearable difficulty.
In the latter case, he is allowed to shake hands to the extent of necessity only. (See the question-answer section below.) A young man is allowed to kiss his young sister or maternal aunt or paternal aunt or their small daughters out of affection and love. However, he is not allowed to kiss them, if it entails sexual arousal. It is haram to play chess, regardless of whether or not the play is with betting.
It is also haram to play chess through computerized instrument, if there are two players involved in it. Based on obligatory precaution, one must refrain from it, even if just the computer is the other player. (See the question-answer section below.) It is similarly haram to play with instruments of gambling in which betting is involved. Based on obligatory precaution, one must refrain from it even when no betting is involved.
It is permissible to engage in sports games with balls like football (soccer), basketball, volleyball, table tennis, handball, etc. It is also permissible to watch such games at the sports stadiums or on various displays and monitors with payment or without payment as long as that does not entail a haram act, like looking with lust, or neglecting an obligation like salat . It is permissible to engage in wrestling and boxing without betting as long as it does not lead to serious bodily harm.
Based on obligatory precaution it is not permissible for a man to shave his beard. Similarly, it is not permissible for him to just leave the hair on his chin and shave the sides. This too is based on obligatory precaution.