If your elbows were on the floor, come back onto your hands. Shift your hips back, straighten your front leg, and do this kneeling hamstring stretch. If your hamstrings are super flexible, feel free to lower down into Split. Hold for five breaths.
Just a word of caution: the splits are an extreme move for your hips and pelvis; with the relaxin hormone softening the connective tissue all over your body, you want to be careful with such extreme poses.