Abdullah bin 'Amr said:
I heard the Messenger of Allah (ﷺ) say: 'When you hear the Mu'adhdhin then say what he says, and do Salah upon me, for whoever does Salah upon me once, Allah will Salah upon him ten (times). Then ask Allah to grant me Al-Wasilah, which is a position in paradise which only one of the slaves of Allah will attain, and I hope that I will be the one. Whoever asks for Al-Wasilah for me, will be entitled to my intercession.'