What Is The Extent Of The Prohibitions That Occur Due To Milk Kinship?

What is the extent of the prohibitions that occur due to milk kinship?

Those who have milk kinship are mahram to each other, that is to say, their marriage to each other is haram (forbidden) forever. There is no difference between kinship by bloodline and by milk in terms of creating marriage impediments. Therefore, all the rules that are valid for bloodline kinship in terms of looking, touching, being together, travelling together, etc. also apply for milk kinships (Mawsili, al-Ikhtiyar, IV, 113).

Source: Presidency Of Religious Affairs The Turkey, High Board of Religious Affairs FATWA