A Very Powerful and Submissive Supplication
One of the most powerful and submissive duas:
اللّهُـمَّ بِعِلْـمِكَ الغَـيْبَ وَقُـدْرَتِـكَ عَلـى الْخَلقِ
أَحْـيِني ما عَلِـمْتَ الحـياةَ خَـيْراً لـي
وَتَوَفَّـني إِذا عَلِـمْتَ الوَفـاةَ خَـيْراً لـي
O Allah, by Your Knowledge of the unseen and by Your Power over creation,
let me live if You know that life is good for me,
and let me die if You know that death is good for me.
If said genuinely and sincerely, one is literally willing to let go of 𝐞𝐯𝐞𝐫𝐲𝐭𝐡𝐢𝐧𝐠 dear to him in this dunya for the sake of the betterment of his deen. It is the ultimate display of trust in and willingness to sacrifice for the sake of Allah سبحانه وتعالى.