It has been reported in several Islamic sources that the Prophet have said angels do not enter a house in which there is a dog or paintings and sculptures of living beings (humans and animals). These words seems to indicate that keeping a dog in the house is discouraged in Islam but not a prohibition. It has also been reported that there is no problem in having hunting and shepherd dogs. What can be concluded is therefore the permissibility of keeping dogs in gardens or outside home although it is disliked to keep them in the house.

Most scholars say that it is permissible for him to marry a second wife even if the first wife does not approve of it (unless stipulated in the marriage contract); however, as the Qur'an says, taking more than one wife depends upon a husband being equitable between wives.

It prohibited to sell alcohol or to promote the selling and consumption of alcohol, or anything else that is haram.

Further to that, if one thinks of one's mission in life as including 'amr b'il-ma'ruf wa nahy 'an al-munkar, then one should actively prevent the advertising and promotion of anything that is harmful.

Thank you for your question. Spirituality is an essential aspect of the source literature (which are the bases of the true teachings of Islam), however, the term Sufism remains loosely defined in western scholarship and it has been the subject of much discussion.