Hadhrat Abdullah ibn Amr ibnul Aas (Radhiallahu Anhuma) reports that he heard Rasulullah (Sallallahu Alaihi Wasallam) saying: “Whenever you hear the muazzin calling out the azaan, thenrepeat the words of the azaan after him, thereafter recite durood upon me. Verily whoever recites durood upon me once, Allah Ta’ala sends ten blessings on him. Then supplicate to Allah Ta’ala to bless me with the honour of ‘waseela’ which is a lofty position and rank in Jannah which will be exclusively granted to one of Allah Ta’ala’s special servants. I earnestly hope that I am granted that position. And whoever supplicates to Allah Ta’ala to grant me the ‘waseela’, my intercession becomes compulsory for him.
Source: Ihyaaud Deen