Hadith 1228:15
Yahya ibn Sa'id narrated to us, from Sufyan, from 'Asim ibn 'Ubayd Allah, from 'Ubayd Allah ibn Abi Rafi', from his father, who said: "I saw the Prophet, may Allah bless him and grant him peace, call the adhan in the ear of Al-Hasan the day he was born, for the prayer."
حدثنا يحيى بن سعيد، عن سفيان، عن عاصم بن عبيد الله، عن عبيد الله بن أبي رافع، عن أبيه قال: " رأيت النبي صلى الله عليه وسلم أذن في أذن الحسن يوم ولدته بالصلاة "