6. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad ibn ‘Isa from Muhammad ibn Sinan from Nasr al-Kath‘ami who has said the following. “Abu ‘Abdallah has said, ‘Those who know that we say nothing but the truth what they know from us should consider it sufficient. If they would hear from us what is different from what they already know from us they should note that it is our way of defending them.’”