Sahih Muslim Book 2, Hadith Number 486.

Chapter : It is commendable to include forehead in washing the face and elbow and ankle in washing the hands and feet, while performing ablution.

This Hadith has been narrated on the authority of Ali’ b. ‘Abd al-Rahman with the same chain of transmitters and there is no mention of the word of al-Ribat in the Hadith transmitted by Shu’ba and in the badith narrated by Malik “Ribat” has been mentioned twice. This is the “Ribat” for you, this is the “Ribat” for you.