السلام عليكم I have shia family members who are ajmi. I said that wiping the head is with the whole head front to back to front. But they just use 2 fingers to scratch a small line on their head front to back once. They used the part in maidah ‘وامسحوا برءوسكم' as daleel. How to show their mistake.

Ustadh AbdulAziz al-Haqqan
The ulama said it is for the mulasaqah, not tab'eedh