سِرْتُ سَيْرًا سَرِيعًا
Translation: I walked a rapid walk.
سِرْتُ: past verb plus first-person subject.
سَيْرًا: accusative absolute object.
سَرِيعًا: accusative adjective qualifying the maṣdar.
Supplemental example: “sarīʿan” is not a second absolute object; it modifies “sayran”.