If a person is praying and bends down to the ground to pick up something from it, such as a handkerchief, does this invalidate his prayer?

Question:
Honorable Shaykh, may Allah grant you success, if a person is standing in the obligatory prayer and then turns and bends down to the ground to pick up something from it, such as a handkerchief for example, does this action invalidate the prayer?

Answer:
No, it does not invalidate the prayer; this does not invalidate the prayer, and he needs it, so he takes it. Yes. And if his cloak falls and he picks it up from the ground, or his turban falls and he picks it up, there is no harm, because he has a need for it.