It was reported that: 

 (After the death of the Prophet PBUH, Bilal could not stay in Madinah any longer, and he immediately left for the city of Damascus and stayed there for a long time until one night, he saw the Messenger, peace be upon him, in his dream. The Messenger said to him, "Oh Bilal! What is this estrangement? Isn’t it time for you to visit me?"

 Bilal woke up in haste and he set off immediately to Al-Madina on his camel. When he arrived in Al-Medina, he went straight to the grave of the Prophet, peace be upon him, and wept a lot upon reaching it. Just at that moment, the Prophet's grandsons Hasan and Hussain came. Seeing them, Bilal rose and embraced them tightly.
They said, 'We long to hear you  calling for prayer as you used to do for the Prophet, peace be upon him. They insisted so he accepted. He went up the masjid, stood where he used to stand, and when he began to say 'Allahu Akbar, Allahu Akbar!' all of Madinah shook as this sound reminded its people with the Messenger of Allah, peace be upon him. Almost all people went out of their houses crying.)

 Abu Sufyan, may Allah be pleased with him, was right when he said, "I have never seen a greater love than the companions’ love to Muhammad (peace be upon him)." 

 This is how every believer should love the Prophet, peace be upon him, till the Day of Resurrection. Pay attention to the following Hadith, please: 
 

(Anas, may Allah be pleased with him, narrated: The Prophet (peace be upon him) said "None of you shall have true faith till he loves me more than his father, his children and all mankind.")

[Agreed upon]