﴿ قَدْ كَانَتْ ءَايَٰتِى تُتْلَىٰ عَلَيْكُمْ فَكُنتُمْ عَلَىٰٓ أَعْقَٰبِكُمْ تَنكِصُونَ ﴾

“Time and again were My messages conveyed unto you, but [every time] you would turn about on your heels”

(My revelations) the Qur'an (were recited) and shown (unto you, but ye used to turn back on your heels) to your initial religion,