Many companies in the linked ETF also earn their money in the form of interest, but only in smaller % amounts in relation to their total income. So interest income is tolerated after all? I don't think you will ever be able to make it completely "sharia-compliant" unless you keep your hands off the stock market.
There are different screenings that are considered in the context of Sharia compliance. One is "business screening" and the other is "financial screening".
In business screening, the main business model is examined more closely, so that the proportion of turnover from non-Sharia-compliant sectors, such as alcohol production and the arms industry, must be less than 5% of total turnover. Interest income is also counted as non-compliant turnover.
Financial screening is about the following: This is based on two key figures, neither of which may exceed a certain threshold. First, the deposit limit is considered. This ratio describes the ratio of interest-bearing investments, such as securities and bonds, to the company's market capitalization. The proportion of interest-bearing deposits may not exceed 30 %. The ratio of interest-bearing debt to market capitalization, the so-called debt limit, must also not exceed 30%.