THE GREATEST RIGHT OF GOD حق الله الأكبر

فأَمَّا حَقُّ اللهِ الأَكْبَرُ فَإنَّكَ تَعْبُدُهُ لا تُشْرِكُ بهِ شَيْئاً، فَإذَا فَعَلْتَ ذَلِكَ بإخلاصٍ جَعَلَ لَكَ عَلَى نَفْسِهِ أَنْ يَكفِيَكَ أَمْرَ الدُّنْيَا وَالآخِرَةِ وَيَحْفَظَ لَكَ مَا تُحِبُّ مِنْهَما.

 

Then the greatest right of God incumbent upon you is that you worship Him without associating anything with Him. When you do that with sincerity, He has made it binding upon Himself to give you sufficiency in the affairs of this world and the next and to keep for you whatever of them  that you like.