 The Prophet sallallahu alayhi wa sallam according to his hadith and tirmidhi. He goes out in the middle of the night to do something. Anas is following him and he sees Abu Bakr Sadiq in the middle of the night and he says what has brought you out? Oh Abu Bakr at this hour what has brought you out? And Abu Bakr said I left my house on the chance that I might see the face of the Prophet sallallahu alayhi wa sallam. This is his best friend he sees him every day but in the night he can't see him. This is the type of love we're talking about. He said well to the one who won't see me on the day of judgment. And Aisha said radi allatah anha who's not going to see you on the Yom al Qiyamah. The one when I mentioned in his presence he doesn't even bother to send benedictions upon me. So we have to say sallallahu alayhi wa sallam.