The call for unity was uploaded to the Afghan Taliban’s website this week. It did not name ISIS directly, but clearly referred to the group, who are now thought to be the world’s most powerful jihadists.

The message, originally in Arabic, said: ‘It is worthy for a shurah (consultation) council to be formed from the leaders of all the jihadi factions and the distinguished people among the experts and the scholars in Sham (Syria) in order to solve their conflicts.’

‘Muslims also should avoid extremism in religion, and judging others without evidence, and distrusting one another,’ it said.