Hadith 211
´Jabir bin Abdullah narrated that :` Allah's Messenger said: "Whoever says, when he hears the call: (Allahumma, rabba hadhihidda 'watit-tammati was Salatilqa'imah, ati Muhammadanil wasilata wal-Fadilata, wab'athhu Maqamun Mahmudan alladhi wa'adtahu) 'O Allah! Lord of this perfect call and established prayer, grant Muhammad Al-Wasilah and Al-Fadilah, and raise him to the praised station that you promised him' - then intercession on the Day of Resurrection is made lawful for him."
Hadith 1342
Ibn 'Abbas narrated that the Messenger of Allah (ﷺ) judged that the oath is due from the one the claim is made against.