It wasnarrated from 'Abdullah bin Harith bin Nawfal that Ibn 'Abbascommanded the Mu'adh-dhin to call the Adhan one Friday, which was arainy day. He said:
"Allahu Akbar, Allahu Akbar, Ashhadu an lailahaillallah, Ashhadu anna Muhammadan Rasulullah (Allah is the MostGreat,Allah is Most Great, I bear witness that none has the right tobeworshipped but Allah, I bear witness that Muhammad is theMessenger ofAllah)." Then he (Ibn 'Abbas) said: "Proclaim tothe people that theyshould pray in their houses." The people saidto him: "What is thisthat you have done?" He said: "One who isbetter than me did that. Areyou telling me that I should bring thepeople out of their houses andmake them come to me wading throughthe mud up to their knees?"
English reference: Vol. 1, Book 5, Hadith 939
Arabic reference: Book 5, Hadith 992