What is the best stretch for the psoas muscle?

Can you please elaborate on the best stretch for the psoas muscle? I understand it's an important muscle for CORE stability and posture, but I'm unsure of the most effective way to stretch it out. Are there specific stretches that target the psoas more than others, or is it more about incorporating a variety of stretches into my routine? Also, are there any precautions I should take when stretching this muscle to avoid injury? Thank you for your help!