sule 6666. (1) Every registered person required to deduct tax at source under section 51 (hereafter in this rule referred to as deductor) shall furnish a return in FORM GSTR-7 4[, on or before the tenthRULE 66-QUO WARRANTO. Rule 66. Literally means by what authority Quo Warranto is a special civil action to determine the rht to the use and exercise of a public office or franchise,