Assuming the report attributed to the holy presence of Imam Jaʿfar al-Ṣādiq (peace be upon him) is authentic, my humble understanding is this:
Servitude is fulfilled through lordship. Servitude is a reality in which the servant, in the true sense of the word, comes into being only when the creature has entrusted all authority over himself to his Creator.
So long as a servant of God has not surrendered all his wishes and will to the presence of the Lord of the Worlds, he will not attain the station of pure servitude. The station of servitude is therefore the full manifestation of the Lord of the Worlds’ divine lordship in the mirror of His servants, for God’s servant is a sign of the Lord of the Worlds.
Although every act performed by any creature comes about only through the Lord of the Worlds’ governing, a servant’s act is accepted by Him only when the servant has fully entrusted all his intentions and deeds to his Lord!
غافر : 44 فستذکرون ما أقول لکم و أفوض أمری إلى الله إن الله بصیر بالعباد
الإنسان : 30 و ما تشاؤن إلا أن یشاء الله إن الله کان علیما حکیما
التکویر : 29 و ما تشاؤن إلا أن یشاء الله رب العالمین