Question about keeping longer natural nails and wudu
As-salamu alaykum. I know the rule about trimming nails at least every 40 days, but I'm wondering how much actually has to be cut. If someone's nails are kept clean (brushed, sanitized, and after wudu) and they trim every 40 days, is it okay to have maybe 5–10 mm of the white tip showing? I'm aware that artificial nails are not allowed because of wudu issues, but what about natural nails that are longer than just tiny nubs? Does anyone know what the correct ruling or practical guideline is?