Is it permissible to offer a medical opinion that does not contradict the rulings of Islamic law, or one that leaves the choice to the patient in the following cases: 1. Masturbation to relieve congestion, and is it medically dangerous? 2. Mutual masturbation, and does it transmit sexually transmitted diseases, and is it considered an act of sodomy? 3. Oral sexual relations using a condom, and do they transmit sexually transmitted diseases, and are they considered adultery or sodomy? And is offering a medical opinion in these cases considered a sin?

The questioner believes that a balance can be struck between the legitimate Shariah interest and the physician's role as a consultant, by offering advice and good counsel, while presenting medical opinions in a way that serves this aspect. This relies on the fact that physicians often differ on many issues, allowing the physician to choose what aligns with the Shariah ruling, and to use language of probability and relativity in presentation. Thus, the physician does not definitively state that there is no harm, but rather uses probable phrases and relative expressions.

It is important to note that some circulated medical information may not be scientific facts and may be intended for other purposes, such as promoting condoms. Studies have shown that condoms do not fully protect against sexually transmitted diseases; in fact, they may contribute to their spread. The American administration and the "U.S. Food and Drug Administration" have acknowledged this, and that abstinence from illicit sexual practices is the only way to prevent the spread of diseases.

If the physician finds no disagreement among medical schools on a particular issue, and cannot express it with relative probable phrasing, and believes that disclosing it might encourage sins, then silence is obligatory to avert this harm. This is a commendable concealment of knowledge, which is used when its disclosure would serve a corrupt and forbidden purpose.