Shama-il Tirmidhi Chapter 053, Hadith Number 008 (375).

Anas Radiyallahu 'Anhu reports: "The day Nabi Sallallahu 'Alayhi Wasallam came to Madinah, everything in Madinah became illuminated. (When the anwaar increased, it could be felt. In the dark nights of Ramadaan many a time because of the intensity of the anwaaraat (illuminations), a natural illumination, was felt). The day when Rasulullah Sallallahu 'Alayhi Wasallam passed away, 'everything of Madinah became dark. We had not yet dusted off the dust from our hands after the burial of Rasulullah Sallallahu 'Alayhi Wasallam when we began to feel the change in our hearts."

Commentary
This does not mean that a change took place in their deeds and beliefs, but they missed the bounties of his noble company and seeing his inspiring personality, and the anwaar that were always present could not be benefited from anymore. Nowadays too the disciples of the mashaa-ikh (spiritual guide) also feel the difference when in the shaykh's company and when not in his company. For this reason, in order to gain those anwaar, one is made to strive in dhikr and muraaqabah (meditation-contemplation). Previously all this was not necessary. The visiting of the jamaal of the entire universe (i.e. Sayyidina Rasulullah Sallallahu 'Alayhi.Wasallam) was enough for countless manifestations. It created such a status of imaan and ihsaan in a man which cannot be attained through countless rnujaahadaat (striving and exerting in spiritual upliftment). After becoming a Sahaabi, the love of Allah and his Rasul Sallallahu 'Alayhi Wasallam became so overwhelming that one's own life and wealth ceased to have value. The lives of the Sahaabah Radiyallahu 'Anhum are testimony to this.