Immediately, the man was made well, and took up his mat and walked. Now it was the Sabbath on that day.
The divine law also permitted the securing of one's property as Barnes noted in the above reference; and the carrying of his bed was necessary to that.  If he had walked off and left it, it would have deprived him of it; and the Master's blessing would have been partially nullified.  But, as Jesus noted on another occasion, the healing and rescue of a beast which had fallen into a ditch was freely allowed by those hypocrites as legitimate on the sabbath day; but the Christ of glory they accused of breaking the sabbath by healing a man, born in the image of God, on the sabbath day!  Their error was great indeed, but it is no greater than that of modern commentators who denominate the Lord a sabbath-breaker, basing their allegation on the testimony of those hypocrites who first accused him of it!  Not a jot or a tittle of the law did Jesus ever break.