Musnad Ahmad 31:646

Yazid narrated to us, Muhammad and Muhammad ibn Ubayd informed us, they said: Muhammad ibn Ishaq narrated to us, from Ya'qub ibn Utbah, from Sulayman ibn Yasar, from Abu Sa'id al-Khudri, who said: I heard the Messenger of Allah (peace and blessings of Allah be upon him) forbidding two types of fasting, two types of prayer, and two types of marriage. I heard him forbidding prayer after the morning [prayer] until the sun rises, and after the afternoon [prayer] until the sun sets; and [forbidding] fasting on the day of al-Fitr and al-Adha; and [forbidding] combining a woman with her maternal aunt, or a woman with her paternal aunt [in marriage].