Musnad Abu Ya'la al-Mawsili 150:9

Suwayd ibn Sa'id narrated to us, Baqiyyah narrated to us, from Muhammad ibn Ziyad, who said: I heard Abdullah ibn Abi Qays say: I heard Aisha say: The Messenger of Allah (may Allah bless him and grant him peace) forbade *al-wisal* (continuous fasting without breaking it) in fasting.