Oil leak under the car

Yesterday I noticed an oil leak under the car. I have never seen any dripped on the gound. The oil has dripped on to some parts. I am attaching couple of pictures.
Its on the front driver side under engine.

How do I locate the leak source ?

Any help would be appreciated.

you should start off by getting under there and clean everything you can. spotless. get some degreaser, spray it on there, and rinse it off. then drive around for a day or two then get back under and check.

personally, looks like a powersteering hose issue

I also say power steering. The two rubber hoses from under the reservoir. They are known to leak after 6-7 years.

id say power steering too degrease and jet wash all the crap off but most certainly the power steer hoses check fluid level common leak on these

really hard to see with all the crude...clean with degreaser and rinse+ wipe with rag and repeat...do not do it on lawn or drive-way..will kill lawn and stain drive-way..do it on street...pictures are of power steering area....loose cap or bad hose or clamps.. have friend turn wheel at full lock and hold...and look for leaks?

if it makes you feel any better, the bottom of your engine looks ten times better than mine.