Ubayy bin Kaab reported,

The ruling they used to give, that water is required only from water, was a concession granted in the earliest days of Islam. Afterward we were commanded to perform the full washing. Ibn Mubarak said, Muamar then informed me.

Ahmad 21102

Sahih

حدثنا خلف بن الوليد حدثنا ابن المبارك عن يونس عن الزهري عن سهل عن أبي نحوه قال ابن المبارك فأخبرني معمر بهذا الإسناد نحوه

أحمد 21102صحيح
Contents
Reference
Commentary
Ayat
Collection
Musnad Ahmad
Book
Sahl bin Saad from Ubayy bin Kaab
Numbering
Darussalam 21102
Ahmad 21102