وَأَنْ أَقِمْ وَجْهَكَ لِلدِّينِ حَنِيفًاAnd that you direct your face towards the Hanif religion,This means to make one's intention in worship solely for Allah alone, being a Hanif.Hanif means one who turns away from associating partners with Allah.For this reason Allah says, وَلَا تَكُونَنَّ مِنَ الْمُشْرِكِينَand not be one of the idolators.This statement is directly connected with the previous statement, وَأُمِرْتُ أَنْ أَكُونَ مِنَ الْمُوْمِنِينَ (And I was commanded to be one of the believers).