Allah said,

﴿قُلْ﴾

(Say), O Muhammad , to those idolators, about worshipping Allah alone and trusting in Him,

﴿أَغَيْرَ اللَّهِ أَبْغِى رَبًّا﴾

(Shall I seek a lord other than Allah...) ﴿6:164﴾,

﴿وَهُوَ رَبُّ كُلِّ شَىْءٍ﴾

(while He is the Lord of all things ) and Who protects and saves me and governs all my affairs But, I only trust in Him and go back to Him, because He is the Lord of everything, Owner of all things and His is the creation and the decision. This Ayah commands sincerely trusting Allah, while the Ayah before it commands sincerely worshipping Allah alone without partners. These two meanings are often mentioned together in the Qur'an. Allah directs His servants to proclaim,

﴿إِيَّاكَ نَعْبُدُ وَإِيَّاكَ نَسْتَعِينُ ﴾

(You (alone) we worship, and You (alone) we ask for help (for each and every thing).) ﴿1:5﴾ Allah said,

﴿فَاعْبُدْهُ وَتَوَكَّلْ عَلَيْهِ﴾

(So worship Him and put your trust in Him.) ﴿11:123﴾, and

﴿قُلْ هُوَ الرَّحْمَـنُ ءَامَنَّا بِهِ وَعَلَيْهِ تَوَكَّلْنَا﴾

(Say: "He is the Most Gracious (Allah), in Him we believe, and in Him we put our trust''.) ﴿67:29﴾, and,

﴿رَّبُّ الْمَشْرِقِ وَالْمَغْرِبِ لاَ إِلَـهَ إِلاَّ هُوَ فَاتَّخِذْهُ وَكِيلاً ﴾

(Lord of the east and the west; none has the right to be worshipped but He. So take Him a guardian.) ﴿73:9﴾ There are similar Ayat on this subject.