Uqba bin Amir reported,

I heard the Prophet ﷺ say, "There are two men from my nation. One of them rises during the night and struggles with himself to perform ablution, while knots are tied upon him. When he washes his hands, a knot is untied. When he washes his face, a knot is untied. When he wipes his head, a knot is untied. When he washes his feet, a knot is untied. Then Allah says to those behind the veil, 'Look at this servant of Mine, struggling with himself and asking of Me. Whatever My servant asks of Me, it is his.'"

Azami 1561

Sahih

عن عقبة بن عامر قال

سمعت النبي ﷺ يقول: رجلان من أمتي يقوم أحدهما من الليل يعالج نفسه إلى الطهور، وعليه عقد، فيتوضأ، فإذا وضأ يديه انحلت عقدة، فإذا وضأ وجهه انحلت عقدة، وإذا مسح برأسه انحلت عقدة، وإذا وضأ رجليه انحلت عقدة، فيقول الله للذين وراء الحجاب: انظروا إلى عبدي هذا يعالج نفسه يسألني، ما سألني عبدي فهو له.

الأعظمي 1561صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Wudu
Section
Reward of purification
Numbering
Jami al-Kamil 1561 (2nd edition)
Azami 1561