Why does Islam impose conditions on the doctor?

Question : All right, Muslim. Why does Islam impose this condition?

Answer : No, no, there is a reason. Is it because this is an act of worship in which Islam imposes conditions, or is it because this is a trust and the non-Muslim is not trustworthy? It is the latter, because matters of medicine are not an act of worship. That is why we find among doctors some who are disbelievers; it is not an act of worship. But because the non-Muslim cannot be trusted, a Christian doctor might tell a Muslim, "If you pray standing, it will harm you," so that he does not pray standing. There is no doubt that if a Christian says or does this, it is out of his ignorance, because the Islamic religion, praise be to Allah, has ample room. If one cannot pray standing, he prays sitting and receives the reward of one who prays standing.