A.T. Robertson Commentary John 13:25

"He leaning back, as he was, on Jesus` breast saith unto him, Lord, who is it?" — John 13:25 (ASV)

He (εκεινος). "That one" (John).

Leaning back (αναπεσων). Second aorist active participle of αναπιπτω, to fall back.

As he was (ουτως). "Thus." It was easily done.