Rafael nadal on roger federers retirement it was an honour

I think you may be mistaken. Rafael Nadal has not publicly commented on Roger Federer's retirement. In fact, Roger Federer has not officially announced his retirement from professional tennis.

However, Rafael Nadal has spoken highly of Roger Federer in the past, and the two players have a long-standing rivalry and respect for each other. Nadal has often praised Federer's skills and achievements, and the two have been known to exchange kind words and gestures on and off the court.

It's possible that you may be thinking of a different quote or statement made by Nadal about Federer, but I couldn't find any evidence of Nadal commenting on Federer's retirement.