Allâh’s Messenger salallâhu alaihi wa sallam said, “Whoever says when he enters the morning:
رَضِيتُ بِاللَّهِ رَبًّا وَبِالإِسْلَامِ دِينًا وَبِمُحَمَّدٍ نَبِيًّا
Radhîtu billâhi Rabban, wa bil-’Islâmi dînan, wa bi-Muhammadin salallâhu alaihi wa sallam Nabiyyan. – Once in the morning.
I am pleased with Allâh as my Lord, with ’Islâm as my religion and with Muhammad salallâhu alaihi wa sallam as my Prophet.
– Then I guarantee that I will take hold of his hand until I enter him into Paradise.” [at-Tabarânî, classified as hasan lighairihi by al-’Albânî in Sahîh at-Targhîb wat-Tarhîb and as-Saîhah]
Prophet salallâhu alaihi wa sallam said: “He indeed has tasted the relish of ’îmân: one who is pleased with Allâh as his Lord, with ’Islâm as his dîn and with Muhammad as a Prophet.” [Muslim, at-Tirmidhî]
To be pleased with Allâh subhânahu wa ta‘âlâ as his Lord means that the believer looks upon Allâh’s pleasure as the sole achievement of his life, is satisfied and content with Allâh alone and will not supplicate to anyone other than Him. To be pleased with ’Islâm as a code of life implies that whatever ’Islâm has laid down for a believer by way of spiritual guidance or practical legislation should be looked upon as the will of Allâh and should be willingly and cheerfully put into practice. He will not follow a path other than ’Islâm, and will only perform acts that agree with the legislation of Muhammad salallâhu alaihi wa sallam. To be pleased with Muhammad salallâhu alaihi wa sallam as the Messenger of Allâh means that the believer is satisfied and comfortable that Muhammad salallâhu alaihi wa sallam is his Prophet and for every Muslim. Saying so indicates that it is through him salallâhu alaihi wa sallam that Allâh’s will has been made known to us. He salallâhu alaihi wa sallam is the bearer of the final revelation and is therefore best suited to tell us how Allâh subhânahu wa ta‘âlâ is to be loved and obeyed, how His pleasure can be sought and how His laws can be applied in practical life. So, without obeying Muhammad salallâhu alaihi wa sallam and following him sincerely, we cannot obey our Lord.
From the book “REACHING OUT TO MY RABB”